FX Impact M4 PCP Air Rifle
$2,199.99
Caliber:.22 (5.5mm)
Color:Black
Upgrades:700mm
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Description
With the release of the FX Impact M4, the Swedish manufacturer has not only left a lasting "Impact" on the airgun industry, they have also set a new standard for what a modern PCP Air Rifle should be. The Impact M4 features the Adjustable Match Precision MKII (AMP) regulator, external micro and macro hammer spring tension adjustment, and an external valve control adjustment. Together, these features represent a level of adjustability never before seen in the airgun world. While you may not need or want to alter these adjustments, the ability to test different settings and see their performance is at your fingertips.
The adjustability doesn't stop there. The Impact M4 also utilizes the Smooth Twist X Superior barrel liner system that allows for the interchanging of calibers. Maybe more importantly, the system provides users the ability to purchase different liners made with different rifling twist rates specifically tailored to certain ammo. The possibilities are seemingly endless! And with the improved Power Plenum 750, the output performance adjustability is enhanced even more! This allows for a wider power adjustment range without sacrificing shot count.
No detail was overlooked on the Impact. Shouldering the rifle highlights the ergonomic friendliness of the design. The new UG1 AR style grip and safety switch are a welcome set of features that will be comfortable for many shooters. The stock is capped off with a vertically adjustable rubber buttpad. Probably the most user friendly feature is the forward mounted reversible cocking lever that cycles the high capacity magazine with ease. Follow up shots will come at blistering speed, and the lightweight, quick set match grade adjustable trigger allows you to place shots with extreme precision.
Carried over from the previous version is the rear Power Block. The power plenum stages the power capabilities of the FX Impact, and the rear block handles that transfer of power much like a car’s carburetor. The Power Block will be especially useful for those who desire to shoot heavy slugs. The pressure in the plenum can better translate to the pressure behind the slug upon firing, allowing higher speeds and power. Those shooting heavy slugs are encouraged to add the FX Impact Tungsten Hammer weight to also allow for higher working pressures.
A welcome new addition to the M4 is the new rigid top plate and new scope rail system. The top plate is considerably thicker and stronger than it was on the M3, enhancing the shooting experience and performance. The top rail also has an 11mm dovetail machined into it that the longer Picatinny scope rail rides on. This allows the user to customize the rail's position to get just the right eye relief for their optic setup. You can even remove the Picatinny rail and mount directly onto the 11mm dovetail if you desire.
FX has answered the call from shooters yet again, with a slew of enhancements that you’re sure to love. The M4 comes ready to do just about anything, from small and medium game hunting, to topping the field at a 100 yard benchrest match. The Swedish powerhouse raises the bar yet again, so pick one up today and unlock your shooting potential!
Helpful resources:
- Learn about hunting with air rifles
- Tips for picking the right airgun for hunting game & pests
- Learn about airgun hunting laws in your state
- Shop related categories: pellet guns, pellet rifles
FX Impact M4 PCP Air Rifle
- FX Smooth Twist X Superior (STX) barrel system
- Interchangeable calibers and barrel liners (sold separately)
- Power Block
- Externally adjustable AMP MKII (Adjustable Match Precision) regulators
- Externally adjustable hammer spring tension with macro and micro adjustments
- Externally adjustable valve control
- Quick Tune System for virtually tool-free adjustments
- 250 BAR (3,625 PSI) max. fill pressure
- Max regulator working pressure of 170 BAR
- Equipped with improved 75cc Power Plenum 750 - allowing for an even wider range of power adjustment
- .22 and .25 cal M4's feature Dual transfer ports - one optimized for pellets, one for slugs
- Male Quick Disconnect fitting
- Shroud is threaded 1/2x20 for moderator
- Forward mounted reversible sidelever cocking
- Picatinny/Weaver optics mounting rail with 30 MOA compensation rides on 11mm dovetail allowing further customization to meet every shooters need
- Picatinny accessory rails below cylinder and on each side of the forearm
- New Quick Set Trigger - Adjustable match trigger
- Wika dual pressure gauges: one for air cylinder pressure, one for regulator pressure.
- Height adjustable rubber buttpad
- FX UG1 AR15 style grip
- AR15 style manual safety
- Redesigned Side Shot magazine capacity*: 34 rds. in .177, 28 rds. in .22, 25 rds. in .25, 23 rds. in .30
- Maximum muzzle energy **:
- 35 FPE in .177
- 87 FPE in .22
- 100 FPE in .25
- 125 FPE in .30
- Includes one side-shot magazine, FX moderator, and 3 year transferable warranty
* - Older Side Shot magazines are compatible with the M4.
** - Max Energy achieved with FX Slug Power Kit installed.
600mm (23.62”) Barrel, Standard Models:
- Available in .177, .22, .25 and .30 cal.
- Removable 480cc carbon fiber air cylinder
- Overall length of 34”
- Weight: 6.85 lbs.
- Shots per fill: 375 in .177, 270 in .22, 130 in .25 and 85 in .30
700mm (27.55”) Barrel, Sniper Models:
- Available in .22, .25 and .30 cal.
- Removable 580cc carbon fiber air cylinder
- Overall length of 39”
- Weight: 7.15 lbs.
- Shots per fill: 330 in .22, 160 in .25 and 105 in .30
Tech Note: While the manual states the M4 models are capable of 300 BAR fill pressures, this is only achievable with aftermarket carbon fiber bottles. The current factory bottles from FX that are included on the rifles are rated for 250 BAR fill pressures and should not be filled over this pressure.
Specifications
Ballistic & Conversion Calcs
The FX Impact M4 redefines the air gun industry with unmatched adjustability and precision. Featuring the AMP MKII regulator, Smooth Twist X barrel system, and Power Plenum 750, it offers unparalleled performance. With ergonomic design, a new UG1 AR grip, forward cocking lever, and adjustable trigger, every shot is a masterpiece. The innovative top rail system ensures perfect optics setup. Elevate your game with the FX Impact M4---unmatched power and versatility await!
Introducing the FX quick set trigger. Switch from hunting to match grade with one screw. Plus, a stronger magazine and the new brass piston AMP MKII regulator for higher pressures and faster refresh rates.
The M4's rear Power Block boosts power transfer, ideal for heavy slugs. Pair with the Tungsten Hammer weight for higher speeds and power, delivering unmatched performance for serious shooters.
The M4's new rigid top plate and customizable scope rail system enhance performance and shooting experience. Adjust the rail for perfect eye relief or mount directly on the 11mm dovetail for versatility.
Experience the revolution in airgun technology with the FX Impact M4. This modern PCP air rifle sets a new standard with the AMP MKII regulator, external hammer spring tension, and valve control adjustments. Unmatched adjustability at your fingertips---elevate your shooting game today!
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Overall Rating
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Tell us what you think
10 of 60 FX Airguns Impact M4 Reviews
Very awesome PCP, have the M3 Nd the Avenge X. Both from Pyramid. Much faster shipping than its competitors.
Things I Would Have ChangedNothing
What Others Should KnowBuy here for the Customer Service and fast shipping.
Everything. Handling, weight, and shootability are 5 star. Accuracy is 5+ star. Tunability is 5+ star. I have the 700mm barrel .25 and love the almost effortless power it produces.
Things I Would Have ChangedNot much other than a better factory magazine, the aftermarket ones i have i like more.
What Others Should KnowDont be intimidated by all the different adjustments to tune the rifle. I mastered it within a week. If you have the money BUY THIS RIFLE DO NOT HESITATE. Im a serious gun guy (55 yrs old and have had over 100 rifles) and this air rifle ranks right at the top of them all, its that good.
So I wanted to wait a bit before posting my review on the FX Impact M3. It's been a little over a year and I can honestly say that this is a top of the line air rifle. The accuracy, adjustability, shot count, and support behind this product make it a winner in my book.
Things I Would Have ChangedLonger factory bottle pic-rail. Not an after market rail. A factory design to be able to mount a shoulder strap or a one-point strap
What Others Should KnowIt's worth every penny in my book.
Almost everything, comfortable and great looking rifle. 1 inch groups at 100 yards with 100-150$ scope. Definitely back yard friendly.
Things I Would Have ChangedRifle is heavy
What Others Should KnowIt took some tinkering to make my rifle shoot how I wanted. This is not a beginner rifle. Be patient with the rifle and break it in. Shoot about 100-150 rounds before sighting in. I did not mess with the regulators just used the hammer spring dial, quick tuning system, and the valve screw.
It takes some work to learn how to tune it, but after watching the FX Master Class videos and spending some time tuning it it's by far the most accurate air rifle I've ever used. Its also the quietest!
Things I Would Have ChangedA longer stock and more forward balance point would make it shoot better free hand. It really seems to be designed to shoot from a bag or bipod.
What Others Should KnowRight out of the box this thing was hitting 1 inch groups at 100 yards. I my mind that says it all.
EVERYTHING, I own a an FX Wildcat M2, it is accurate but this gun is on another level...
Things I Would Have ChangedThe shoulder pad could use an upgrade but other than that nothing
What Others Should KnowAnyone thinking of getting this hun DO YOUR RESEARCH, know what you are doing and how to tune it before you order it. Definitely not for people new to PCP airguns...
This thing is a beast. It's very well made and extremely accurate out of the box. Tuning is ridiculously easy. And there are tons of accessories for it, including caliber change kits. I bought this in .22 and the default moderator was effective. It did dampen a bit more with an additional segment... quiet either way. So, save your $$ for other add-ons :)
Things I Would Have ChangedI don't really like the bottle being unprotected or the location of the little picatinny rail. But both were sorted by adding a Saber Tactical arca rail, which I also really like.
What Others Should KnowI have a FX Wildcat and could not have dreamed of cheating on it. But when I held a friend's Impact, I knew I had to have one. If you like full-sized rifles and tinkering with configurations and settings, this is definitely your beast. It does not disappoint.
Very high quality and very accurate. Im getting 140 shots per fill in 25 caliber which is awesome! The included suppressor works very well and I do not feel the need to upgrade it. Trigger is incredibly smooth. Love the ability to change calibers from .177 to .357 and the adjustability to shoot pellets or slugs and all different weights.
Things I Would Have ChangedI would extend the bottom pic rail under the bottle instead of having to buy aftermarket. Also should include a *bag rider* on the stock. This should not have to be an aftermarket item and I will be buying both of these items.
What Others Should KnowMedium to high rings are needed as the stock doesnt drop at all. I stated with low but realized after the first shots the scope was too low. I shoot left handed and the magazine does not interfere at all. I thought it would and was wrong.
It's very accurate, good shot count, tunable, light weight and not very loud. Comes in a custom case.
Things I Would Have ChangedI would make the stock adjustable. It has zero adjustments. I would charge the fill port because it is very narrow and difficult to install and remove the service QDC.
What Others Should KnowThis rifle came with a air leak and suppressor alignment problems. PA took care of my return and sent me a RAW HM 100x LRT. It is also leaking but between the two I like the accuracy better on the RAW.
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Oct 08, 2024
By MiB
Great pcp rifle Fast and excellent service
Things I Would Have ChangedNone
What Others Should Knowgot it sooner than expected