FX Impact M4 Compact PCP Air Rifle

Swedish manufacturer FX Airguns continues to turn out new models, blending power and accuracy into a very small package with the new Impact M4 Compact! Featuring a 500mm barrel and an overall length of just 25", the Compact only comes up short in one area, and that's the length!  A stubby 300cc removable carbon fiber bottle is the only other departure from the standard Impact, and still provides a solid shot count despite the small size. 

From a 250 BAR fill, you can expect up to 150 shots in .177, 110 shots in .22, 70 shots in .25 and 30 shots in .30 caliber.  With plenty of energy to accompany those shot counts, you can expect up to 25 FPE in .177, 45 FPE in .22, 60 FPE in .25 and a whopping 80 FPE in .30!  Long time fans and followers of the Impact platform may recall that early versions of the standard size rifle produced about those same specs, with a longer barrel and larger air cylinder.  FX is able to achieve this impressive stat line thanks to the power plenum 750!  Adding 75cc of firing chamber volume and new valving allows for these impressive numbers that simply couldn't be achieved before this innovation. 

This is also due, in part, to the rear Power Block. While the power plenum stages the power capabilities of the FX Impact, the rear block handles that transfer of power much like a car’s carburetor. FX redesigned the rear block and the valve housing which allows for better airflow, efficiency, and power potential. The Power Block will be especially useful for those who desire to shoot heavy slugs. Those shooting heavy slugs are encouraged to add the FX Impact Tungsten Hammer weight to also allow for higher working pressures.

Of course, the rest of the rifle packs all the innovation the Impact is known for. This includes the AMP MKII regulator, external hammer spring adjustment and valve control. Otherwise known as the new Quick Tune System, this easy-to-adjust system is unlike any other on the market!  The Compact still utilizes the Smooth Twist X Superior barrel liner system, which has proven to be astonishingly accurate. This means you can easily change out calibers and liners. You can even turn your Impact Compact into a standard size Impact if you so desire.  The possibilities are truly endless with this platform!

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 Compact PCP Air Rifle

• 500mm FX Smooth Twist X Superior (STX) Barrel System
• End of shroud is threaded 1/2" x 20 to accept a moderator (not included)
• Interchangeable Calibers and Barrel Liners (Sold Separately)
• Power Block
• 25” Overall Length
• Featuring the new FX Quick Tune System for nearly tool-free tuning
• Externally Adjustable AMP MKII (Adjustable Match Precision) Regulator
• Externally Adjustable Hammer Spring Tension with Macro and Micro adjustments 
• Externally Adjustable Valve Control
• 250 BAR (3,625 PSI) Max Fill Pressure
• 170 BAR max regulator working pressure
• Equipped with the 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
• Reversible Forward Mounted Sidelever Cocking
• Removable 300cc Carbon Fiber Air Cylinder (Additional Cylinders Sold Separately)
• 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.  
• 6.1 Lbs overall weight
• 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: 25 FPE in .177, 45 FPE in .22, 60 FPE in .25, 80 FPE in .30
• Includes one side shot magazine and 3 year transferable warranty

*  - Older Side Shot magazines are compatible with the M4. 

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.