See how that works? Simple mathematics.

Here's a few stats I'd like you to know about this petite treat:

# Mag Capacity: 25 rounds
# Adjustable rear sight
# Gas Blowback Recoil Action is Crisp & Snappy
# Hop-Up is Adjustable
# Metal Slide, Metal Frame, & Nice, soft rubber grip (feels good in the hands of the operator)
# Threaded Outer Barrel for attaching a mock suppressor
(*speaks loud enough for the hidden microphones to clearly pick up*) It's just for looks & funsies.  It is NOT for dampening the report of an Airsoft gun, or, more importantly, a portable firearm as defined by the BATFE.
# Compatible with C02 mags*

*And now a wordy (but supposed to be brief) discussion on the use of Carbon Dioxide gas (C02).
      Using C02 gas instead of green gas/propane is much harder on your Airsoft GBB.  C02 is a more powerful gas, which causes the slide to slam back with more force than regular green gas.  While damage is not inevitable, it certainly increases the chances of your slide or frame cracking, despite their metal composition.  So don't let that metal body fool you into thinking the gun is invincible. 
     On the other hand, I can say with first-hand experience, that using C02 is awesome.  While it may be harder on the gun, it makes that baby kick like an angry mule.  Another word of caution:  don't loose sight of what's really important in a gun: Accuracy.  Increased recoil will affect your accuracy, and probably not in a positive way.
    My overall opinion of C02 is this:  Just like pretty much everything else in this world, it has its advantages and disadvantages and whether you think one side out-weighs the other is entirely your own opinion.  As long as you know the details to both, I would consider you qualified to make a decision on which way to go on this one.

 **Disclaimer: the above statements are specifically referring to the use of C02 in gas blowback pistols (and rifles, for that matter).  They do not necessarily apply as much to using C02 in a gas sniper rifle.  That is another story for another time. 

Alright.  That's all I'll say on that for now. 

So how about a few more pics before I leave you faster than a regrettable one-night stand?   Sounds good to me, too (the pics and the regrettable, one-night stand).

Airsoft Guns, WE baby hi-capa 3.8, airsoft green gas blowback pistol, gbb, pyramyd air

There's obviously a lot going on in this pic so I'll break it down for you.  Those are all types of WE/Marui compatible Hi-Capa Mags available to you.

From left to right, you've got the two (2) WE Caspian 50-round, extended Hi-Capa magazines.  Just to the left of the beautiful Baby, there's the standard, WE Caspian ~31-round, Hi-Capa 5.1 Mag, followed just on the other side of the gun by the WE Caspian ~31-round, C02 Hi-Capa 5.1 Mag (see above for a reminder on C02 if you have Attention Deficit Disorder), and last but certainly not least, on the very right, I've included the Shorty 3.8 Mag that comes with the Baby Hi-Capa 3.8.  Despite its shorter stature, it manages to pack in 25 BBs, which is still more than any single stack, Airsoft 1911 GBB can say for its mags.  I'm only EVER-SO-SLIGHTLY knocking 1911s, though, since they are my absolute favorite type of handgun.

Airsoft Guns, WE baby hi-capa 3.8, airsoft green gas blowback pistol, gbb, pyramyd air
There's that threaded barrel I was telling you about. See? I'm trustworthy.

Airsoft Guns, WE baby hi-capa 3.8, airsoft green gas blowback pistol, gbb, pyramyd air
That rubber grip is fo' realz, dawg.

Airsoft Guns, WE baby hi-capa 3.8, airsoft green gas blowback pistol, gbb, pyramyd air
WE Caspian Baby Hi-Capa 3.8 with Hi-Capa 3.8 Mag (25 rounds) inserted.

Airsoft Guns, WE baby hi-capa 3.8, airsoft green gas blowback pistol, gbb, pyramyd air
WE Caspian Baby Hi-Capa 3.8 with Hi-Capa 5.1 Mag (~31 rounds) inserted.

Airsoft Guns, WE baby hi-capa 3.8, airsoft green gas blowback pistol, gbb, pyramyd air
And, of course, for those who are man enough to rock 'em (or lousy enough shots to need 'em), here's the WE Caspian Baby Hi-Capa 3.8 with the 50-round, extended Hi-Capa mags.

This gun chronos in the low 300s, like most Airsoft GBB pistols.  It's a great little handgun that you can use as your main sidearm or as a secondary to your secondary, if you catch my drift (two guns at the same time).  The other nice thing about these Hi-Capa pistols is that there are a ton of aftermarket replacement and upgrade parts available in the event your gun breaks or just needs a little tune-up to satisfy your need for more "betterness" in your gun. 

If you're looking for a solid little Airsoft sidearm for a great price, the WE Caspian Baby Hi-Capa 3.8 would certainly be a good candidate for consideration. 


So, like Optimus Prime and his Transformer buddies, there is more than meets the eye when it comes to Airsoft AEG gears.  I was once told by a local Airsoft shop owner where I used to live (who is now out of the Airsoft business), that all I needed to do to upgrade my gun was just to install a heavier spring.  This was several years ago, I was brand new to the Airsoft world, and had no clue what I was doing, so I believed him.  Now, however, I know at least one of the reasons why that shop is gone.  He was dead wrong.  He was also a tool, but that's another story for another time.   

One very important piece of the custom Airsoft guns puzzle, is selecting the right set of gears based on the intended use of the AEG they'll be running in. 

You've already seen my babbling on about high-torque gears and some things to watch out for there, now here's a breakdown of the other types of Airsoft AEG gears and their corresponding purposes.

Standard Ratio Gears.

These gears are likely to come installed in most Airsoft AEGs.  They have a gear ratio in the neighborhood of 18:1 to 22:1 or so.  While every setup is going to be different, these gears would probably be best suited for use with 120 & possibly 130 springs, if you were using a high-torque motor as well.

High-Speed Gears.

These gears are best suited for players that wanted to increase their rate of fire.  Generally speaking, players that use these gears in their AEGs are running them on full-auto during games.  Having the increased rate of fire allows the Airsoft "operator" (I use the quoted term extra loosely) to lay down more BBs per second/minute than someone using an identical setup, except with standard ratio gears.

High-speed gear sets utilize fewer teeth than the other gear sets, thus they have the lowest ratios out of all the different types. Lower teeth-counts translate to a faster cycle rate of the piston, and faster piston cycle rates is just a fancy way of saying, "rate of fire" or "ROF" for short.

Some high-speed gear sets not only use less teeth that mesh between the Bevel, Spur, and Sector gears, but they use less sector teeth that mesh with the piston's teeth, requiring the high-speed piston to have less teeth than a standard piston.  This is essentially called short-stroking.  By using less teeth on the piston & sector gear, you're decreasing the distance that the piston has to get pulled back by the Sector gear before it gets released and pushes the burst of air out that's needed to propel the Airsoft BBs toward the bad guys.

High-speed gears generally have a low overall ratio, between 13:1 and 18:1.

If you're serious about going for a true high-speed setup in your AEG, don't half-a$$ it by only getting the high-speed gears.  Get a good motor to go along with it.  Pyramyd Air offers two excellent options in the motor department at the moment: the ICS Turbo 3000 and the SRC Ultra High Torque AEG motors.  Not only do these motors perform well, their affordability factor is just too good to ignore.  Also, make sure NOT to use a metal piston or piston head, as they weigh more than the plastic/polycarb pistons and will not only reduce your AEG's power a bit, they'll slow down your ROF.  Also, use gearbox bushings that have the little ball bearings in them instead of the solid metal bushings (make sure you know the diameter of the bearings that your gearbox uses).  Those are better suited for high-torque setups, which we will dive in the next installment or two.  Perhaps one of the more influential parts affecting your ROF is the spring strength.  You CAN have a high-speed, high-torque setup, but plan on dropping LOTS of coin and tearing your gun down OFTEN to repair and replace broken parts.  If you just want a high-ROF AEG shooting 400 FPS or less, you'll not want to run more than a 120 spring in your rifle.  The lighter the spring's strength, the higher the AEG's ROF will be, assuming all other appropriate parts have been installed.

High-Torque/Torque-Up/Super-Torque-Up/Infinite Torque-Up Airsoft AEG Gears
(All names refer to gears designed to use with heavier springs, 130 and above).

I'm just going to cover some of the basics here and try not to get TOO technical.

Basically, high-torque gears use more teeth on each individual gear to make it easier for the AEG's motor to pull the heavy spring back and release the piston.  If you've ever paid attention to the different size gears on a 21-speed mountain bike, it's sort of the same principal as using a high gear on the bike to help you climb a steep hill.  When you use the higher gear on the bike, which has more teeth, you'll notice you're having to pedal more often, yet you make less progress moving forward than you would on flat ground and using a lower gear with less teeth.  However, it's much easier to deal with the forces of gravity pushing/pulling against you using those extra teeth.  Yea, that is my terrible analogy.  Please forget about it immediately in the event it does not make sense to you.  There are probably better examples out there.   

Since they have more teeth, high-torque gears have a higher overall ratio, anywhere from 23:1 or all the way up into the mid 40s:1 for Super/Infinite Torque-Up gear sets from various manufacturers.   

Airsoft Guns, Airsoft AEG Gears, high speed gears, high torque 
gears, standard ratio gears, Pyramyd Air You'll also see a number of the high-torque gear sets being offered in what's called the "helical" variety.  Helical refers to the angle at which the gear's teeth are cut.  They are not cut like the commonly-used spur-type gears found in pretty much all stock Airsoft AEGs.  

An interesting, yet highly irrelevant factoid about helical gears is that they are not only functional when run in parallel (Top pic) with each other, like in an Airsoft AEG gearbox, but they can also mesh together and work when the gear shafts are situated perpendicularly to each other (Bottom pic).  This has nothing to do with Airsoft, I just thought it was kind of cool.  You're welcome. 

Helical gears are said to be better suited for high-torque environments because of the science/physics behind the way the angled teeth mesh with one another.  I'll also acknowledge that there are others with enough credibility in the engineering field that I respect them, who feel that helical gears in an Airsoft AEG do not yield any real significant advantage over using the more common, spur-type gears. 

I'm not sure I'll ever get to the bottom of that one, since my knowledge of physics is limited to the forumla, Distance = Rate x Time, or something to that effect.  That may not even be correct, which would mean that my knowledge of physics is equal to Absolute Zero.  Anyway, if in fact I believed that there wasn't any real advantage, I would just use spur-gears because helical gears are much more difficult to shim in the gearbox, at least in my experience.  Also, the general consensus from the various engineering sites I've read up on regarding these helical gears is that they are also more quiet than spur gears.  However, while I haven't done any official audio analysis testing of this theory, it seems to me like the helicals that I use in my M14 DMR, for example, made the gun louder than it was when I was running the spur-types.  Could be just my imagination, but I am thinking about testing this out since I happen to have the gear to do so.  It'll take some time for me to prepare for such a test in order for it to be done properly, but I think I'm going to try and make that happen.

If you've got any suggestions, tips or tricks on the best way to compare the loudness of a helical gear set vs a spur gear set, feel free to post them up here on the blog.  While I've already got a good enough idea of how such a test should be conducted, I'm always open to new ideas. 

An important thing to note about helical gears is that as the gears mesh together, they can produce quite a bit of friction as they rub together.  Therefore, it's important to use a good white lithium grease and apply it to your gear teeth.  I just use a q-tip, dipped in the grease and apply a light coating to my gear teeth. 

Speaking of things I personally use, I like to apply white lithium grease with a PTFE (Teflon) additive in it on my AEG's gears.  It's rated for extremely high temperatures and recommended for use with gears, per McMaster-Carr.

Another very important and often overlooked item about Super-Torque/Infinite Torque-Up gears with the higher ratios around 40:1 or whatever is that because they utilize so many more teeth while keeping their overall size the same as all other Airsoft AEG gear sets with less teeth, some of the high-torque gear sets require the use of a half-tooth piston in order to accommodate all the extra teeth on the bottom half of the sector gear that stick out past the smooth, toothless section of the Sector's top half. 
Do you see how the teeth on the bottom half of the Sector gear stick out past the smooth, toothless section of the top-half?

Compare that to a Sector gear with a lower ratio/less teeth:
See how the teeth on the bottom half don't stick out past the toothless section of the top half?  You can use a full-tooth piston with this type of Sector gear, while you'll need the half-tooth, like I said, for the Sector gear in the first photo.

I think that covers most of the BASICS regarding high-torque gears for the upgraded, high-powered Airsoft AEG.

FYI, which is an acronym standing for: "Airsoft."

I wanted to do some filming today of the VFC HK416 CQB's performance at distance. Showing off the gun's performance at the chrono station is all fine and dandy, but it's like showing off what a $100,000 drag racer can do by revving its engine really loudly while it's parked in the garage. Not exactly a true performance demo.

I spent about a good chunk of time (3 to 4 hours) planning, preparing, gathering gear, etc., etc. and then had to find the spot (twss) I wanted to film at where I knew I wouldn't be bothered by things like other people and stuff. Then I spent maybe 30-45 minutes setting up once out on location. Once I had everything ready to go, I pulled the VFC HK416 out of its case and went to sight it in on the target I had set up. The only problem was that the wind was blowing pretty hard and was constantly shifting directions. I immediately assessed this to be an issue, but I continued firing to see if I could make something happen. Well...I couldn't. I just couldn't, I tell you.  After all that prep work, I was NOT able to perform my test.  Lame.  The wind was a definite issue, but I was also using the clear, .27g Bioval BBs, which can be very difficult to see at times and this was one of those times. I MAY also need a new prescription for my glasses, to add a third variable to the mix.  So, "Fudge," I said.  I probably took 40 shots or so with the HK416 and maybe got 15 hits on the target (30% or so).  Since I couldn't see the BBs, I had no real reference as to how for left or right, up or down that they were flying past the target.  I probably should have started at a shorter distance than 68 yds, but I love going big (twss).  I DO need to point out that at 360 FPS, I was able to obtain hits at almost 70 yards (68 yds/204 feet) with the HK416.  I truly believe that in better conditions, I can improve upon the results I got today. 

The second half of the story is that I've been working on an M14 DMR (Designated Marksman Rifle) project sort of concurrently with the VFC HK416 CQB project.  I just finished going through the M14 and re-doing many of the mods I had done the first time around because they were stupid ideas that I had come up with and did not work.  I have finally learned that you really do need to try and keep it simple with these projects.  Only upgrade or modify what you KNOW needs to be upgraded or modified.  Do NOT get creative.

So anyway, the M14 was now chrono-ing on par was the VFC HK416's consistency level and needed to be tested for accuracy as well.  So I pull that out and, at the same distance of 68 yards, began drilling the target, one right after the other.  These are the marks you'll see on the target in the video.  I have heavily upgraded and reinforced the M14 to shoot at 480 FPS VERY consistently.  While I had much better results with the M14, windage was still very much an obstacle to optimal testing conditions.  Not only did my brief test with the HK416 give me the warm and fuzzies about its performance potential, my M14 could quite possibly by my finest work to date and just might allow me to gain entry into the 90-100 yard territory.  I DON'T KNOW THAT FOR SURE, but at 70 yards, the .27g BBs wasted NO time in arriving at that target when fired from the M14, whereas the travel time for the same BBs fired via the HK416 took at least 1.5 seconds or so before you could here them hit the cardboard.  So 70 yards is going to be pretty close to the maximum effective range for my CQB project (which, at 360 FPS, is totally fine by me), however, I think we've got plenty of room for growth left in the M14's department.

Assuming I can get out of bed early enough next weekend, I'm going to try this again in the morning before the wind has a chance to get fired up like it did today.  Hopefully, the changing the time of day to the morning, instead of 2pm when it's 96 degrees out, will do the trick and I'll be able do the test in reasonable conditions.   

Ok.  That's it.


The Grand Finale (Part Zwei)

The VFC HK416 CQB Airsoft AEG

Airsoft Guns, Custom VFC HK416 CQB Airsoft AEG, Custom Airsoft Gun, Pyramyd Airsoft Blog

Well, I guess for those of you who stuck around through this entire process, you may now give yourself a gold star.  We've made it.  We're done.  The VFC HK416 CQB is complete.  It's tuned, toned and ready to send some BBs down range very accurately, and in rapid succession. 


Airsoft Guns, VFC HK416 CQB, Upgraded AEG, Custom Airsoft Guns, Pyramyd Air Airsoft Guns, VFC HK416 CQB, Upgraded AEG, Custom Airsoft Guns, Pyramyd Air


Airsoft Guns, VFC HK416 CQB, Upgraded AEG, Custom Airsoft Guns, Pyramyd Air

Airsoft Guns, VFC HK416 CQB, Upgraded AEG, Custom Airsoft Guns, Pyramyd Air


Here's pretty much everything going on underneath the hood...

- TSD JB Unicorn (JBU) 6.03mm Tight Bore Inner Barrel (Custom Length).
    It began as the 363mm-length JBU 6.03mm Tight Bore Barrel, but I "nipped the tip" to bring the Cylinder to Inner Barrel Volume Ratio closer to ideal, which is generally around a 2:1 ratio. 

- Stock VFC Hop-Up Bucking, Soft-Type.
    You'll recall in an earlier post that I sealed up the bucking/inner barrel with Teflon tape to prevent air loss.

- PCS Hop-Up Nub for increased accuracy on a consistent basis.

- Stock VFC Air Seal Nozzle.
    I applied an ever-so-small amount of silicone grease to the tiny o-ring seal inside the air nozzle.

- Modified Stock VFC Cylinder Head.
    I didn't document this step, but I cut out a thin (aprx. 3/16" thick) piece of foam padding made by 3M to not only improve the piston's angle of engagement, but also to deaden the slapping sound that the piston makes when it hits the cylinder head.  The sound changed from a higher-pitched slap to a slightly lower-pitched thump when the piston hit the pad.  I am currently writing a separate illustrative tutorial on this step in the next few weeks.

- Stock VFC Ported Cylinder.
    I applied a very thin layer of silicone grease inside the cylinder head to reduce friction between it and the piston head o-ring seal.

- Stock VFC Aluminum Piston Head with Bearings.  This was not the ideal part for this specific setup, but I kept it because I didn't have a spare polycarb head with bearings available and I wanted one that had the bearings to prevent the spring from getting torqued and twisted.  The reason it's not the ideal piston head for this specific set up is because I'm using a relatively light spring and using an aluminum piston head adds extra weight to the piston, which makes it heavier for the spring to push, resulting in a reduction in the overall velocity or power of the rifle.  But as I said in yesterday's video, this is a CQB weapon and does not need a lot of power so I'm not going to lose any sleep over any FPS I may have lost from the aluminum piston head's use.

- Modified Stock VFC Clear Piston.
    As documented earlier, I busted out my Dremel and removed about half of the third tooth.  VFC did me the favor of removing the entire 2nd tooth, which I thought was delightful of them to do.  This mod is directly associated with adjusting the angle of engagement.  You MUST remove these teeth.  Otherwise, plan on buying a new piston each after you pull the trigger once or twice.

- JBU M120 AEG Spring.
    Also pulled this from TSD JB Unicorn (JBU) M120 Upgrade/Tune-Up Kit I had lying around in order to put a little extra stank on the BBs.  
- Stock VFC Spring Guide with Bearing
    Make sure to insert this into the end of the spring with the tighter coils. 

- Stock VFC Standard Ratio Metal Gears.
    Applied a reasonable (don't over-do it) amount of White Lithium Grease with polytetrafluoroethylene (aka PTFE aka Teflon).  Do NOT use White Lithium Grease inside your AEG cylinder or on other parts that come in contact with rubber o-ring seals.  The gears and the piston/cylinder are two different systems.

Here's a little factoid about this Teflon/PTFE stuff I keep mentioning: When used as a lubricant, PTFE has one of the lowest coefficients of friction against any solid. Hot knowledge has been dropped.  Right on your chest.  You're welcome. 

- Stock VFC Red AEG Motor.  Gives a decent trigger response and when used in conjunction with an 11.1v Li-Po battery, it does not have any trouble pulling back that JBU M120 spring I installed. 

- Stock High-Quality, 18 awg Wiring.
    The wiring that VFC used appears to be pretty good quality just based on a visual inspection, though I'm certainly no authority on that here.  My only complaint is that its quite stiff (twss) and can be cumbersome when dealing with your battery in the buffer tube & how that affects the adjustable stock's ability to retract into 1st position.

- Battery Connector Plug.
    As you know, I hate Tamiya connectors, so I removed the Tamiya plug that came on the HK416 and soldered a Deans connector plug to the end of the AEG's wiring


- The Adjustable Stock - Classic Army Adjustable VLTOR-Style Stock.
    Watch the video. I explain myself there.  While Pyramyd Air does not technically have this item listed for sale on their website, they are a Classic Army dealer and I'd bet a solid $2.69 that if you called them up at 888-262-GUNS (4867) and spoke with one of their sales representatives, you could probably get them to special order it for you if you used words & phrases like, "Please," "Thank you" and "Pyramyd Air Rocks My Socks."  They really love it when you say that last one.

- The Buffer Tube - I simply modified the one that originally came with the HK416.
    As I also mentioned in the last video, I used a wire brush Dremel bit (along with the Dremel itself) and removed the black coating from the buffer tube that came on the HK416 in an attempt to give it a stainless steel look.  I think it's a cool look if done right.  This was my first-ever attempt at doing this, so I can't say that I'm completely 100% satisfied with how it turned out (remember: the author is a perfectionist), but I still think it turned out pretty well, all things considered, so I'll give it a 94%, which is still a pretty solid A in school.

- The Torch - UTG ZL337 Weapon-mount & Handheld Tactical Xenon Flashlight "Win" Package.
    Since my HK416 has been set up as a Close-Quarter Battle weapon, and generally speaking, close-quarter battles are generally conducted in doors where vision can be impaired by the lack of sufficient lighting, I mounted a UTG ZL337 Xenon Tac light on the rail system and attached the remote pressure switch pad to the vertical fore-grip.  Clocking in at a measly $49.99 for everything included in the package, this thing is an insane deal!

It's hard to justify the large premium you would have to pay for the equivalent products specs and accessory package from Surefire or some of the other well-known real steel brands when Pyramyd Air has the UTG option available.  Bottom line, this thing is uber sick and uber L337.  Cheesy, I know, but I still feel clever.  So shut it. 

- Speaking of the vertical fore-grip, I'm using a UTG Deluxe Ergonomic Foregrip
    This thing not only feels great in the hands of the operator (twss), it's got a couple nice features to it, one of which is that on each side of the finger-molded grip, there is a panel that slides out so that you can replace it with the remote pressure switch of your favorite weapon-mounted tac light (e.g. the UTG ZL337 I just mentioned).

Last, but certainly not least,
- The Optics: I decided to go with the TSD JB Int'l Aimpoint-Style Red & Green Dot Sight on this one.
    Yet another great bargain here between olid metal body casing, the red and green dot reticles are adjustable, allowing you to zero in your sight, and it COMES WITH THE RAIL MOUNT & tiny battery so you can enjoy this baby right out of the box. Throw it on your gun and go shoot somebody*!!!

*This assumes that "somebody" is not only on an approved Airsoft field, but that they are wearing proper, ANSI-rated eye-protection.  You probably shouldn't shoot them if you're just in the parking lot hanging out, either, but that's more of a courtesy issue and can be disregarded if the situation calls for it.    

So, all in all, you'd be pretty dumb if you attempt to convince me that the VFC HK416 CQB isn't the Airsoft shizzle.  Not just because I upgraded it, but because I upgraded it well.  Quite frankly though, I only upgraded it because I'm a perfectionist.  It really doesn't need much work at all to be a great gun.  Other than a little Teflon tape here and there, which you should do to just about every Airsoft gun you own (except if you're lucky enough to own a gun from a certain extreme custom Airsoft sniper rifle builder I know), the VFC HK416 CQB is one of the few Airsoft AEGs that I've either seen and/or had first-hand experience with that is pretty much solid right out of the box.  I give this gun a solid "two trigger-finger" rating, as in, "I want one HK416 for each of my two trigger fingers."  That's the best ration you can get. 

If you couldn't gather this from all my ravings over the last several blog posts, you're an idiot.  Slap yourself.

If you're NOT an idiot, buy this gun.  Use it on the Airsoft field and stare it while you're alone in your parent's basement.  Be sure to take lots of photos of it and post them on the Airsoft Retreat forums for others to enjoy.  Some call that Airsoft Vanity, I call it Bragging Rights.  It's the right thing to do.

Speaking of bragging rights, let's see that custom Airsoft AEG one more time for the road...
Airsoft Guns, VFC HK416 CQB, 
Upgraded AEG, Custom Airsoft AEG, Pyramyd Air
Just for good measure, to really drive it home, here's one last shot of the VFC HK416 CQB, this time with a non-functional***, MOCK suppressor attached.

***Non-functional, as in, no foam or ports inside that will dampen the sound of a portable firearm, as defined by the BATFE.
Airsoft Guns, VFC HK416 CQB, Custom Mock Suppressor, Custom Airsoft AEG Guns, Pyramyd Air

Mmmmmmm. I don't know about you, but that right there really does it for me.
Even my 5.11 backpack wants to be near it.

Alright.  It's over.  Now onto other amazing Airsoft things.  Stay tuned. 

Love you.


The Grand Finale (Part I)
(As Opposed to The Grand Lebowski)
Airsoft Guns, VFC HK416 CQB, Custom Airsoft AEG, Pyramyd Airsoft Blog, Heckler & Koch

If you're just seeing this review for the first time, you can play "Catch-Up" by reviewing 
The Entire VFC HK416 CQB Pyramyd Airsoft Blog Review Thread

Before I show you the feature film of the finished product, there's a few things I'll need to go over.

First, it need NOT be mentioned that my cinematography skills leave a lot to be desired.


Airsoft Guns, VFC HK416 CQB, Airsoft AEG, Pledge of Allegiance, NRA, American Flag, Pyramyd Airsoft BlogImage used with permission from the NRA,
which I think was pretty "Roosevelt" of them.
However, I not only pledge my allegiance to the Flag of the United States of America and to the Republic for which it stands, as one nation under God, but also to the pursuit of improving the quality of any videos I may or may not bestow upon you in the future.  Please be patient with me, I'm not ready to remove the training wheels just yet, so to speak.

***Secondly, there was an incident that occurred in the background whilst I was filming this beautiful disaster of a video.  I'll let you view the footage first to see if you even notice it, and then I'll clue in any of those who remain clueless after the video break.  It wasn't a big deal in the least because of the informal nature of the film, but nonetheless, it was an incident, regardless of how minor.  

Third, speaking of training wheels, I can also promise you that as I produce more and more of these videos, I'll get progressively more and more entertaining to listen to and/or watch on camera.  I realize I sound like a "droll troll," if you will, in the films I've made thus far.  I'M WORKING ON IT!!!!

Alright, enough with the hot air.  As they say in a certain San Fernando Valley-based industry, here's the money shot.

In a nutshell, that's my newly-custom, VFC HK416 CQB AEG that I picked up from Pyramyd Air.I think I love her. 

***Did you catch what happened?  Most of you probably did.  Sophie, who is one of my two Miniature Pinschers, thinks she's some sort of canine diva and loves to work the camera.  She got wind of me filming a subject that in no way involved her and opted to come outside to voice her protest to such a violation of her trust.  I then turned behind me, where she was throwing her tantrum, and had to snap at her, signaling I would metaphorically whoop her 7-pound butt if she maintained her current course of action.  Needless to say, she had her attorneys on the phone immediately and were putting together a case against me, regarding an alleged breach of contract for failure to include Sophie in any and all photographs or video footage captured on my watch.  I don't recall an agreement to any such contract ever occurring, but I decided to settle out of court for a soon-to-be disclosed amount in an effort to salvage our now strained relationship.

Who's gonna protect the protector?
Airsoft Guns, VFC HK416 CQB, Custom Airsoft AEG, Airsoft Arsenal Guard Dogs, Pyramyd Airsoft Blog

I think these two Min Pins are up to the task. Sophie's has taken up the right sector (the viewer's left), Violet's on the left (the viewer's right), the VFC HK416 Airsoft Rifle pulling rear security, with each of the three doing her darnedest to look "hard" in the presence of the others. I think I'll title this pic, "Three Good-Lookin' Fräuleins Ready to Ruin Someone's Day."

Sophie and Violet make for excellent guardians of the HK416 and the rest of my Airsoft arsenal. Their barks are extremely sharp, occasionally shrill and they're able to project those vocals at eardrum-piercing decibel levels to alert anyone within a quarter mile that they have assessed a situation and detected what they consider to be a threat. Gotta love that German efficiency! 

The terms of the breach of contract settlement between Sophie and I were that as an order of specific performance, I would photograph the two Min Pins striking an intimidating pose, and then feature said photo (see above) on the Pyramyd Airsoft Blog.  The terms also specified that I place an attractive, high-performance Airsoft AEG in the background of the photo.  The AEG must not only possess all of the aforementioned attributes, it must also replicate a real steel assault rifle of German descent, as they themselves hail from "ze Deutschland." Naturally, without an ounce of hesitation, I knew that the only German Airsoft AEG replica of sufficient for this situation was, of course, the Heckler & Koch 416 Select-Fire Assault Rifle, manufactured by Vega Force Company (VFC).

In return, as consideration for my specific performance, Sophie agreed not to pee on the carpet for the next 6 days. You'd think that would be a pre-existing legal duty for her to "abstain from staining" (see what I did there?), but these Min Pins apparently run by a different set of rules.  Lucky for Violet, she was merely an uninvolved, third-party beneficiary of sorts to this agreement and was thereby not bound by the terms of the consideration.  There is just no way she could go 144 hours (6 days, each consisting of a 24-hour period, Professor) without giving my carpet a thorough soiling.  What can I say?  They are wonderful, tiny German dogs who pee where they are not supposed to.     

Now for the next blog, how's about we get out of that dirty little nutshell and get into a recap of the finer, more cleanly details of the procedures I performed internally and externally that resulted in such an epic VFC HK416 CQB Airsoft WIN.

For now, I'll leave you with one of the great riddles of our time:

How much wood could a woodchuck chuck, if a woodchuck ordered a VFC HK416 AEG from Pyramyd Air and subsequently lit that wood up with said Airsoft HK416 on full-auto from 10ft?

Think about it and let me know your thoughts in the comments section.

Thursday, July 8, 2010

VFC HK416 Chrono Tests

You might remember the original VFC HK416 footage I filmed prior to any upgrades in one of the earlier posts about this AEG.  You can review that post & footage here:  VFC HK416 Original Chrono Test

If you're just joining us here and have not been following my progress with this AEG, you can see it all here in this thread: VFC HK416 CQB Pyramyd Airsoft Blog Thread

Today, I've got some updated videos showing the new readings, which I have to say, I am quite pleased with.  Without further ado, here's Video Test 1:

There were several error readings, which if you know anything about the Shooting Chrony's, it was because I was not being a straight shooter, no pun intended. It's somewhat difficult to operate the camera effectively, shoot straight the 416 over the Chrono sensors, and watch the Chrono readings simultaneously. Whatever.

Here's just a second video that I was just messing around, but the results came out really with the exception of one shot which you will see. I won't spoil it for you.

Here's Video Test 2:

Here's the a VFC HK416 CQB chrono data recap for both videos:

Video Test 1 Video Test 2

355.9 355.9
360.8 360.8

364.5 364.5
363.4 363.4

354.4 354.4
367.7 367.7

360.6 360.6
365.0 365.0

359.7 359.7
365.0 365.0

319.4 365.2
368.4 368.4

365.2 367.6
363.2 363.2

367.6 364.6
199.3 365.2

364.6 364.1
365.2 364.8

364.1 369.4
364.8 366.9

369.4 368.6
366.9 369.8

368.6 366.5
369.8 365.0

366.5 366.9
365.0 368.8

366.9 364.4
368.8 364.4

364.4 368.7
364.4 367.3

368.7 365.3
367.3 371.0

365.3 366.4
371.0 363.4

366.4 367.7
363.4 365.1

367.7 366.7
365.1 367.0

366.7 363.9
367.0 363.9

363.9 370.0
363.9 367.7

370.0 368.1
367.7 364.7


364.7 368.0

368.0 362.9
Average 363.0 365.0
362.9 366.6
STD Dev 10.08 3.99
366.6 362.4
Low 319.4 354.4
362.4 364.9
High 370.0 370.0
364.9 367.5
Spread 50.6 15.6
367.5 365.2

365.2 364.3

364.3 368.2

368.2 368.0


Average 360.8 365.8

STD Dev 28.63 2.29

Low 199.3 360.8

High 371.0 371.0

Spread 171.7 10.2

For each test data group, I've included two sets of the same data, with the second column removing the one, extreme outlier to give you an idea of just how consistant the VFC HK416 CQB is shooting now. The first test shows a standard deviation of 4 FPS without the low-baller and the 2nd test drops down to 2.29 FPS with the low-baller ignored.  Both tests show an average of 365 FPS with the low-baller ignored, and even with the outlier taken into account, the averages were 363 and 360 FPS, respectively.  Not too shabby in my book.  But maybe I need to raise my standards.  I don't know. 

I think I'll hang onto this one.  For the next blog, I'll detail out exactly what I did internally to get it where it's at now.  Stay classy, San Diego and thanks for stopping by, but mainly stay classy.  Also, thanks for stopping by.  STAYCLASSY.


When I'm not thinking about Airsoft, I'm usually not alive at the moment. Although, sometimes I AM alive and I think about airsoft and Velociraptors simultaneously. Like what would happen if a Velociraptor taught himself how to operate the crap out of a highly upgraded and finely tuned, Classic Army Dragunov? I mean, seriously!!! We'd all be screwed. Properly.

While the CA Dragunov is not the subject of today's post, I did think it pertinent to give you an ever-so-brief glimpse into the inner workings of my thinking muscle.

No, while a Velociraptor with a Dragunov is certainly a serious issue, there's another serious issue I'd like to discuss with you today (aside from the Dragunov and the fact that Google's "Blogger" does not recognize the word "Dragunov" in its spell-checker, which is, to say the very least, an atrocious fail). That issue is the use of Tamiya connectors on your Airsoft AEG, and in this case, on the VFC HK416 CQB that I've been swooning over for the last week or two. I assume that the Airsoft AEG manufacturers overseas use Tamiya connectors because they are the most cost-effective (read: the cheapest). There is just no way in purgatory that anyone will convince me that Tamiya connectors are better to use than Deans for ANY reason, save one: As you will see and read about below, they are easier to install on the end of a set of bare-tipped wires than Deans. Other than installation, they are freaking AWFUL. Wanna know why? NO!?!?! Well I don't care, I'm going to to tell you anyway. First of all, I have melted several sets of connectors together on various AEGs, some upgraded, some not. Some using 11.1v Li-Po batteries, and some using 9.6v NiMH AEG batteries. Stupid. It really doesn't take much heat to do it either. They just suck. So they can get stuck together, which is lame if you're using a NiMH battery and need to disconnect the battery after use in order to recharge it. Not so much of a problem for Li-Po's because they use that second set of wires to charge, but still. What if it was your only battery and you wanted to use it with another gun? You really should have at least one backup battery, but I realize that everybody has their own budget limits and there is just so much Airsoft stuff out there that rocks face that one must allocate one's limited funds wisely in order to maximize one's "Win." My 9th grade honors English teacher would shart herself if she read this blog, but I'm pretty sure her genealogy report would show that she was a quasi-direct descendant of Satan, if you went back far enough. So I couldn't care less what she thinks.

Anyway, I really don't feel like wasting all of your precious COD4 time ranting about Tamiyas when I could be raving about Deans connectors and allowing you to feast your eyes on a sub-par soldering job that I did on my beautiful VFC HK416 CQB in an effort to swap out the worthless stock Tamiya connectors with some legitimately tight Deans connectors. You know me. I like photos. I'm very visual. So you KNOW what's coming next...


Airsoft Guns, Airsoft AEG deans connectors, tamiya connectors, VFC, H&K, HK416, Heckler & Koch, Umarex, Pyramyd Air
So I got a bit of a head start here before I managed to remember that I'm supposed to be documenting my progress to share with all of you three readers here on the blog.

Therefore, to the left, you see that I've severed the worthless Tamiya connector from the HK416's wiring, as well as the stupid fuse casing thing.  The fuse is lame.  I'm no electrician, but like the French, the fuse is not to be trusted.

I've also stripped the insulation off the tips of the wire to prepare them for soldering to the Deans connectors.  The details of what happened next will go with me to the grave.  All you need to know is that in the struggle for dominance between the myself and the process of soldering a #*$*&%@ deans connector to the VFC 416, I eventually established myself as the alpha male and the deans connector admitted defeat.  
Airsoft Guns, Airsoft AEG deans connectors, tamiya connectors, VFC, H&K, HK416, Heckler & Koch, Umarex, Pyramyd Air

I think you can pretty much deduce what went down from the aftermath photo to the right.

And for the record, the answer is unequivocally "NO," I did NOT preshrink those stupid shrink-wrap tubes like an idiot, prior to slipping them over the soldered connection.  It took so much time and so many attempts to make the solder stick that the wires got super hot when I wasn't paying attention to them (like an idiot) and shrunk the tubes, rendering one of them useless.  I was able to salvage one of them and make use of it.  I used black electrical tape to wrap the other connection. 

Airsoft Guns, Airsoft AEG deans connectors, tamiya connectors, VFC, H&K, HK416, Heckler & Koch, Umarex, Pyramyd Air

I did some clean up work in an attempt to make its presentation somewhat acceptable and achieved satisfactory results.

Here you can see the connector protruding from the end of the HK416's buffer tube.  Obviously, I have removed the stock for viewing purposes.

Airsoft Guns, Airsoft AEG deans connectors, tamiya connectors, VFC, H&K, HK416, Heckler & Koch, Umarex, Pyramyd Air

Next, what I've done is attached a female to 2 male Y-connector so that I can run two stick batteries in parallel with each other, thereby doubling my trigger time.  This essentially circumvents the issue of having to deal with the small battery space in most AR-style AEGs like the VFC HK416

Airsoft Guns, Airsoft AEG deans connectors, tamiya connectors, VFC, H&K, HK416, Heckler & Koch, Umarex, Pyramyd Air

To the right, you can can get an idea of how the whole setup comes together.  If you couldn't tell on your own, you're looking at the back of the HK416's stock, with the back plate removed to show the buffer tube at top center as well as each of the stock's battery space tubes.  The wiring from the gearbox is coming out through the buffer tube as you saw above, and then the batteries sit inside each tube with their respective wires sticking out the back as well, in order to connect to the HK416's wiring.  I only had one of my stick batteries handy at the time that I took these pics, so just imagine the second one being in the shot and sitting nice and pretty, inside the stock's battery tube on the right side. 

Airsoft Guns, Airsoft AEG deans connectors, tamiya connectors, VFC, H&K, HK416, Heckler & Koch, Umarex, Pyramyd Air

Here, you can see that I've taken the liberty of tucking the wires inside the buffer tube to allow me to snap the butt plate onto the back of the stock.  It's hard to see in this shot, but there are channels on the stock to allow the wire to pass through from the battery tubes into the buffer tube with the butt plate securely snapped in place.  I did Dremel these channels out a bit to make life a little easier for myself, but it wasn't entirely necessary, albeit entirely convenient once completed. 

Airsoft Guns, Airsoft AEG deans connectors, tamiya connectors, VFC, H&K, HK416, Heckler & Koch, Umarex, Pyramyd Air


A la Lil' Wayne,

"I make it rain."

That's all for today.  Long and overly-wordy story short, follow my advice and put Deans on all your AEGs, especially the high-quality ones like VFC's HK416 CQB

I've got chrono results for you (post internal tuning), as well as a fashion show featuring the VFC HK416 CQB.   After that, we'll be moving on to even greener pastures.  I will do my very best to make sure those pastures don't suck for you.  I love you.


At least three of the four items mentioned in the title of the Pyramyd Airsoft Blog's latest entry will be discussed (the VFC HK416 CQB, its hop-up and inner barrel), the fourth will be thought of fondly and with the utmost respect at all times.

Let's get right into it, shall we?

THE HOP-UP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Airsoft Guns, Airsoft AEG gearbox, VFC, H&K, HK416, Heckler & Koch, Umarex, Pyramyd Air

That's what it looks like, chamber, bucking and all.

If you lift your gaze just a smidge, towards the top of the image, you'll see that I've got a brand-spelunking new JBUnicorn Tight Bore Barrel, awaiting installation.  I figured that since I had it available and whilst I had the HK416 in pieces, I may as well swap out the stock barrel for the upgraded one.

Basically, it's like what Willy Shakespeare said in a sonnet once or something, "When in Rome, upgrade your Airsoft gun."

Airsoft Guns, Airsoft AEG tightbore barrel, VFC, H&K, HK416, JBUnicorn, Heckler & Koch, Umarex, Pyramyd Air When I originally ordered the JBUnicorn Tight Bore Barrel, I didn't really have a specific AEG in mind at the time, I just knew that I had several M4-style guns lyin around that needed to be, as my friend Tim at CQB Radio says, "Geeked Out." Fa sho. So this one, at 363mm, is a bit longer than the HK416 requires, so it will have to be cut down.

So I made my mark based on the length of the stock barrel. 
Airsoft Guns, Airsoft AEG tightbore barrel, VFC, H&K, HK416, JBUnicorn, Heckler & Koch, Umarex, Pyramyd Air
And yes, I totally used that razor to cut the barrel down.

*sarcastic fart noise*

If I wasn't pressed for time, I would have take my Mitutoyo calipers and calculated the HK416 's cylinder volume and then used that to determine the exact length in mm that my barrel needs to be.  You generally want a 2:1 ratio of cylinder volume to inner barrel volume.  

Airsoft Guns, Airsoft AEG tightbore barrel, VFC, H&K, HK416, JBUnicorn, Heckler & Koch, Umarex, Pyramyd Air

The operation was a success. The excess barrel length was severed and the cut was clean.  I used a specific Dremel bit I had in my "bit kit" to deburr the inside of the new tip and now we're good to go.

The JBUnicorn Tight Bore Barrel is now ready to get fitted with the hop-up unit.

Airsoft Guns, Airsoft AEG hop up bucking, Teflon tape, VFC, H&K, HK416, JBUnicorn, Heckler & Koch, Umarex, Pyramyd Air First things first. The bucking needs to be properly situated over the barrel and then sealed air-tight with Dupont's gift to the Airsoft tuner, aka Teflon tape. I did not photograph the process of checking the bucking to make sure it sits exactly right on the barrel, but basically, check out my diagram.

That should give you clue on what to look for.


That wasn't a typo.  I purposely typed those random letters because I'm a 12 year old in a bald, 6'6" adult male body.

Anyway, there's not much to the wrapping technique that I did there.  Basically, I just pulled the tape tight to make it as flat as possible and wrapped the joint where air can escape between the end of the bucking and the outside of the barrel.  You don't want to wrap the bucking too many times, otherwise you won't be able slide the hop-up chamber over it.    

Airsoft Guns, Airsoft AEG hop up, Teflon tape, VFC, H&K, HK416, JBUnicorn, Heckler & Koch, Umarex, Pyramyd Air Mission complete. Chamber reassembled and installed new tight bore barrel.

I would like to address the elephant in the room now.  Clearly, that is NOT the original, black barrel clip that came with the hop-up, as pictured earlier.  I snagged the yellow one off of another AEG that I am currently working on because that one is getting a whole new unit and therefore didn't need it.

When I was attempting to remove the clip to swap out the barrels, the stupid thing popped off super quick, ricocheted off my desk lamp and flew into oblivion, never to be seen again.

I concatenated a number of offensive swear words and verbalized them at loud decibels.  Consequently, my wife came outside to advise me that it was almost midnight and the screaming of profanities should cease and desist immediately. 
Airsoft Guns, Airsoft AEG hop up, tightbore barrel, Teflon tape, VFC, H&K, HK416, JBUnicorn, Heckler & Koch, Umarex, Pyramyd Air The final step to this process was to install o-ring spacers around the outside of the JBUnicorn Tight Bore Barrel, adjacent to the hop-up unit so that when the barrel & hop-up assembly gets installed back into the outer barrel and upper receiver, the hop-up chamber will get pressed snuggly against the the gearbox, but not TOO snuggly that you can't fit all the body parts back together again, not unlike the unfortunate Humpty Dumpty incident of 1803.  This should, in theory, help to provide a better seal for the air nozzle. I started with one spacer, slid the barrel assembly into the outer barrel/upper and determined that it wasn't going to be quite snug enough, so I added one more. YAHTZEE!!!!!!!!! I have included the box that the o-rings came in for the purposes of helping you identify the dimensions of the o-rings that I used.

Here's what JBUnicorn Tight Bore Barrel looks like with the hop-up unit fully installed and seal, plus you can see what I was talking about regarding the o-ring spacers.
Airsoft Guns, Airsoft AEG hop up, tightbore barrel, Teflon tape, VFC, H&K, HK416, JBUnicorn, Heckler & Koch, Umarex, Pyramyd Air

So now, the VFC HK416 CQB is now ready to be reassembled and tested for accuracy and velocity. Stay tuned for the results. Hopefully we will see some improvement, otherwise, I will have to hang my head in shame and possibly slap myself across the face just prior to, or immediately following the hanging of my head.