FX Airguns Impact M4 Sniper .30 PCP Bullpup, 27.5 in STX Superior Barrel, Black
This FX Airguns Impact M4 Sniper is a .30 caliber PCP bullpup configured with the 700 mm (27.5 in) STX Superior liner system barrel and a black finish. It features the AMP MKII regulator, FX Power Block, and Power Plenum 750, backed by dual WIKA gauges and a carbon-fiber bottle. The rifle includes FX's Quick Tune System with macro and micro adjusters, an external valve adjuster, and a 23-round Side-Shot magazine. Made in Sweden, it comes with a factory hard case, manual, and an installed faux suppressor.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: This air rifle shows light evidence of handling only. Surfaces present cleanly throughout, and the bore has a bright, reflective appearance.
What’s Included
- FX Airguns factory hard case
- FX Airguns Impact M4 manual
- FX Side-Shot rotary magazine for .30 caliber
- Faux suppressor (installed)
The M4 Sniper configuration centers on the 700 mm STX Superior liner system, a shrouded, liner-based barrel built for consistent performance in .30 caliber. The bullpup layout keeps overall length compact while maintaining a 27.5 in barrel, and the 23-round magazine supports extended shot strings.
Its air system pairs the AMP MKII regulator with the FX Power Block and Power Plenum 750, designed to deliver stable regulation and ample air volume. Dual WIKA analog manometers provide clear system readings, with the front/bottle gauge marked to 300 bar max and the rear/regulator gauge marked to 250 bar max, and the Foster-style male quick disconnect simplifies filling. A lightweight carbon-fiber bottle reduces forward weight.
Fine-tuning is straightforward with the Quick Tune System offering macro 1–16 and micro 1–5 adjustments, plus an external valve adjuster for on-the-fly changes. The Quick Set Trigger features adjustable pull weight, and a Safe/Fire selector provides straightforward operation.
Controls are ergonomic, with a right-side sidelever that carries an extended knurled handle and is reversible for user preference. The skeletonized stock includes an adjustable recoil pad and a molded FX pistol grip. A continuous top Picatinny rail, along with side and bottom accessory rails, supports straightforward mounting of optics and accessories. The rifle uses a metal receiver and a uniform black finish throughout, and it is made in Sweden.