FX Impact M4 .35 Cal Bullpup PCP Air Rifle, 30 in STX Superior Barrel, Threaded & Shrouded, Sidelever
This FX Impact M4 in .35 caliber is a modern, high-power bullpup PCP built around the FX Power Block and Power Plenum 750 for consistent performance. It features a 30-inch Smooth Twist X Superior barrel that is both shrouded and externally threaded, a long top Picatinny rail with additional accessory rail sections, and an AMP regulator with a brass piston. The rifle includes a detachable carbon-fiber air bottle, clear pressure marking to 230 bar, and accepts FX high-capacity Side-Shot magazines, with one 18-round magazine included.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Details: Light handling marks are present on exterior surfaces from previous use. Please review the photos for an accurate view of the cosmetic condition.
What's Included
- FX Airguns factory hard case
- Owner's manual
- Detachable FX Airguns carbon-fiber air bottle
- 1x FX Side-Shot clear rotary magazine for .35 caliber (18 rounds)
The Impact M4 platform combines a compact bullpup layout with a sidelever repeater action for fast cycling. The FX Power Block and Power Plenum 750 work with the AMP regulator to deliver stable regulation and efficient air use, while the integrated manometer and Foster-style QD fill port simplify monitoring and refilling. The receiver is clearly marked for a maximum fill pressure of 230 bar.
The 30-inch Smooth Twist X Superior barrel is shrouded to reduce report and includes external muzzle threads. This STX Superior tube is designed for precise performance and is paired with the rifle’s Quick Tune System wheel for straightforward power adjustments.
Controls are intuitive, including a right-side manual safety selector, sidelever cocking handle, and the Quick Set Trigger. Ergonomics are enhanced by a 14.0-inch length of pull, an adjustable recoil pad, a skeletonized butt section, and a rubberized finger-groove pistol grip.
Modularity comes standard with a long top Picatinny rail plus additional accessory rail sections. The rifle accepts FX high-capacity Side-Shot magazines; capacity is 18+1 in .35 caliber, and this example includes one 18-round magazine. The hard-anodized aluminum frame and receiver reflect a durable build from Sweden.