SIG Sauer MCX, Image 1
SIG Sauer MCX, Image 1

SIG Sauer MCX Rattler CO2 BB Rifle

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3.511 reviews
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$169.99

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Description

The SIG Sauer MCX Rattler CO2 BB Rifle has many similarities to the successful short-barreled rifle firearm line that inspired it. It reaches velocities up to 300 FPS for excellent performance for target practice or plinking.

This BB rifle features a minimalist folding stock that is reminiscent of the one from its powder-burning counterpart, making it easy to transport and store due to its compact size with the stock folded. The pistol grip uses a combination of texturing on the sides and ridges on the front and rear that makes it nearly identical to the grip used on the firearm version.

The SIG MCX Rattler utilizes a drop free magazine with a capacity of 30 BBs to provide extended shooting time, and the selector switch goes from safe, to semi-auto, to 3-round burst to deliver an exciting experience without wasting ammo. This BB gun uses a 12-gram CO2 cartridge for power and has ambidextrous controls to accommodate both left-handed and right-handed shooters.

The long Picatinny optics rail for this air gun holds both the included flip-up front sight and the flip-up rear sight to enable accurate shots out of the box, as well as allowing shooters to add a scope or dot sight. In addition, the handguard offers M-LOK T-slots that help to securely and easily attach accessories such as lasers and lights.

To get an airgun that takes its design cues from the renowned family of SBR firearms, buy a SIG Sauer MCX Rattler CO2 BB Rifle from Pyramyd AIR now.

Tech Tip: The safety can only be engaged when the rifle is cocked, like the real steel version. Attempting to force the safety "on" without the rifle being cocked may damage the airgun. 

SIG Sauer MCX Rattler CO2 BB Rifle

  • CO2 power
  • .177 caliber (4.5mm) BBs
  • Semi-automatic and 3-round burst modes
  • 30-round drop free magazine
  • Ambidextrous controls
  • Textured pistol grip
  • Flip-up front and rear sights
  • Long Picatinny optics rail
  • M-LOK handguard
  • Minimalist folding stock
  • Field strips like the firearm
  • Max. velocity: 300 FPS
  • Uses one 12-gram CO2 cartridge
  • Weight: 4.6 lbs. (with magazine)
  • Barrel length: 5.5"
  • Overall length: 23.63"
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Specifications

Caliber
.177 (4.5mm)
Max Velocity
300 fps
Suggested for
Plinking/Fun
Powerplant
CO2
Loudness
3-Medium
Weight
4.6 lbs
Function
Repeater
Max Shots per Fill
60
Action
Burst fire
Fixed/adj. power
Fixed
Blowback
Yes
Scopeable
Weaver/Picatinny
Front Sights
Flip-up, adjustable
Rear Sights
Flip-up, adjustable
Safety
Manual
Barrel
Smooth bore
Barrel Length
5.5"
Overall Length
23.63"
Body Type
Rifle
Stock
Synthetic
Buttplate
Adjustable
Ammunition
5.1gr
Grip
Ambi
Color
Black

Ballistic & Conversion Calcs

Overall Rating

rating
3.511

Ratings

5 star
4
4 star
4
3 star
1
2 star
0
1 star
2

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10 of 11 SIG Sauer MCX Rattler Reviews

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Overall rating
rating
5
source logo

Pretty fun I jus wanted it to match my real rattler lol nice fun lil toy to play around with

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Overall rating
rating
1
Value for money
rating
1
Accuracy
rating
1

REAL JUNK!

This CO2 gun has an extremely limited life because the gas seals in the receiver where the magazine connects are junk! After so many recharges with a new gas cartridge the seals wear out and all your gas leaks out! I know it's not the magazine because I tried a new one and same thing happens.

If you're determined to buy one I recommend getting a protection plan, for whatever it's worth. SIG should stick to making real weapons, which are probably just as worthless!

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Overall rating
rating
4
source logo

First things first, this airgun is very well made. Although the plastic on some parts may be prone to damage (charging handle, flip up sights, and stock). One big problem is that the accessories on this airgun is not (kinda) compatible with other Sig airgun accessories (other airgun handguards). Some Amazing features on this airgun are: slide locking back on last round, Not being able to put back on safe after dry fire, great blowback, YOU CAN FIELD STRIP IT, (internal) gas blowback, the magazine not looking horrible (pmag 🤩🤩🤩) folding stock, the stock not looking horrible, working small features (bolt release and assist, ambi mag release) WORKING SLING QD (only on stock....). Some very bad things about this airgun are: plastic handguard, non working handguard sling QD, flimsy and wobbly charging handle (also plastic), so light that the magazine is heavier when the gun is bare bones, non working sling QD near fire selector. The absolute best feature(s) on this gun for me is the godteir trigger, 3 round burst(I forgot the metion) and charging handle+working bolt. DO NOT! absolutely do not rack the charging handle too hard, it will literally snap.

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Overall rating
rating
5
source logo

Works good, do not overfill magazine. Great for shredding boxes.

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Overall rating
rating
1
Value for money
rating
1
Accuracy
rating
2

The looks

Everything that has to do with its actual functioning

First 2 magazines jammed up. used a different ammo brand for 3rd magazine which also jammed up and magazine leaked out air as well. Tried another brand ammo, made it about 5 shots before air escaped from the seals somewhere coming violently out of the upper receiver. THE GUN LITERALLY BLEW UP IN MY HANDS. RETURNED THIS JUNK

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Overall rating
rating
4
Value for money
rating
3
Accuracy
rating
2

The realism of this air rifle/pistol is outstanding. It’s polymer construction is “Tight, and Solid”. Full upper rail is scope or optics ready.

Give it more FPS, as the current power leaves a Lot to be desired. The detachable magazine is cool, but loading is tedious, and slightly difficult.

The “flash hider/muzzle break” is non-removable for those individuals who like to “dress-up” their airguns. Also, the rear AR/M4 style bolt is functional, but not quite sure what it actually does. The grip is the only thing that can be replaced (the equipped grip is Ugly but very comfortable for myself. The price may seem a bit high, but the fun with this gun on auto* is totally worth it! BTW this gun has a 3 round burst mode, a semi-auto, and safety. If your looking for a plinker, then this may be for you!

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Helpfull Review?
Overall rating
rating
4
Value for money
rating
4
Accuracy
rating
3

I like the overall design. Feels solid. Easy trigger pull.

Redesign of the magazine. And have spare mags available to purchase.

The one I currently have is a replacement. The first one broke internally after the first 3 bbs. I limmediately contacted Pyramydair and arranged for a replacement, which I received in about a week.

I'm having a little issue with the magazine. It has to be really tightened down hard for it to not leak co2. The bb follower spring does alway push the bbs up into firing position, even after I lubed the spring and the channel. Still the majority of time it will not work properly. The bolt catch on the mag doesn't come up and catch the bolt on the last shot like it's designed to do. And I am unable to to find replacement magazines anywhere online. And I hesitate to return the 2nd gun back just for a somewhat minor magazine issue.

Mark Oct 10, 2023

After all those problems, even a replacement, I went through identical return on first one sent, how do you still give it a 4 star review?

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Helpfull Review?
Overall rating
rating
4
Value for money
rating
5
Accuracy
rating
5

This is a very well made airgun. Hefty and sturdy. A blast to shoot

Spare magazines. There are no spare magazines available yet. So, use care when ejecting the mag. It breaks, you'll have a big paperweight. Make sure when introducing a new model, have spare mags available for purchase.

Sig and Umarex need to make sure additional mags are available. For now, mine will be put away until the mags are added for sale. Normally, I don't buy a new model unless spare mags are available but, I wanted the Rattler for my Sig Sauer Collection.

Walter Dec 09, 2023

With spare mags now available, I made sure to get a couple....For those of us, who are hobbies and collectors, having spare magazines are a must...A new release, fantastic...No Spare Magazines, nit good....My rattler was shot once, then put away until the magazines became available...The Sig Rattler is a must have for any airgun enthusiasts...

JRG Jun 30, 2023

Next week

Walter Jun 26, 2023

Still waiting for spare mags to become available...I own dozens if airguns, rifles, pistols, CO2, Break barrel but, those requiring mags, or clips, spares are a necessity....I'm always ready to buy a new product to add to my collection but, the "Sig Rattler" will be the last new product I purchase unless there are spare mags/clips available....It has been shot once and, won't be used again, until spares are available....It is not Pyramids fault...The manufacturer puts a new item out, mags/clips and parts need to come out at the same time....

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Helpfull Review?
Overall rating
rating
5
Value for money
rating
5
Accuracy
rating
4

I like feel and the weight, plus it's FUN.

Nothing

Get one

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Helpfull Review?
Overall rating
rating
5
Value for money
rating
5
Accuracy
rating
5

Accuracy at 10 yards is plenty fine for what it is. The 3 shot burst is just as much fun as full auto on other guns. 12 gram Co2 operation is a welcome thing since some of us only have a half-hour to get out and plink, where an 88 gram or 90 gram would be too much for such a small window. The magazine is really easy to load with a follower that locks back, the Co2 chamber has a built in turn key so you won't need to fumble around with a separate allen key. A HUGE plus there! It's very easy to field strip, just be careful not to lose your spring upon taking it down. Handles and feels identical to it's modern firearm counterpart. It does lock back on last shot which is great. Some of these SBR style airguns do not and you end up wasting Co2. This is not the case here.

The folding stock is a very durable polymer, but I would have liked to see that made in aluminum instead. Of course this keeps the cost down. Still, very durable and only a minor gripe. Also, I would have liked to see the ejection port actually functional as it is on Crosman's DPMS. Again, only a minor gripe that doesn't affect your experience.

Don't forget your eye protection, the bb's will be flying with this one folks! Great fun!

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