FX Impact M4 Copper – Premium PCP Air Rifle
The FX Impact stands as one of the most iconic airguns ever produced, revolutionizing the industry since its 2015 debut. Each iteration has delivered enhanced reliability and accuracy, solidifying its legendary status. Proven across every discipline—from professional benchrest competition to hunting and recreational shooting—this versatile platform provides the ideal setup for any application.
The FX Impact M4 advances the platform with significant improvements while maintaining the distinctive aesthetics that make it instantly recognizable in the field and at competitions.
Having claimed first-place finishes and countless podium positions at major worldwide events, FX Airguns engineered the M4 to be stronger, more rigid, and superior in performance—keeping you at the competitive forefront.
Delivered in a tailored cut-out hard case.
FX Quick Set Trigger System
The premier M4 upgrade is the revolutionary FX Quick Set Trigger (QST). Understanding that the trigger is fundamental to every great shot, FX designed one trigger to accommodate every shooting style. Instantly switch from hunter-style resistance to standard FX feel or pure match-grade crispness—all through a single screw adjustment. No trigger replacement needed when transitioning from hunting to match shooting.
Superior Rigidity
A completely redesigned top plate—substantially thicker and stronger—provides enhanced rigidity across the entire platform for improved performance and shooting consistency.
Ergonomic Grip Design
The new FX Grip delivers refined ergonomics with ideal palm swell and beaver tail contouring. This comfortable, well-defined grip ensures confident handling and precise shot placement.
Advanced AMP Regulator
Standard equipment includes the new brass piston regulator—stronger with faster refresh rates, improved consistency, and capability to handle higher bottle pressures up to 170 bar maximum working pressure.
Enhanced High-Capacity Magazine
Completely redesigned magazines feature reinforced construction and improved internal mechanisms ensuring smooth drum rotation even when fully loaded with the heaviest available slugs.
Versatile Scope Rail System
The machined dovetail rail integrated into the new top plate delivers enhanced strength with greater optic mounting flexibility. The extended scope rail slides along the dovetail for optimal positioning and locks securely with precise alignment.
Refined Aesthetics
Subtle design refinements throughout—new contour lines, convenient access cutouts, and cohesive angles—enhance practicality and visual appeal while honoring the iconic Impact heritage.
Specifications
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Cocking System: Right-hand sidelever with ambidextrous mount for left-handed shooters
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Magazine: Removable high-capacity, easy-load design in durable injection-molded POM. 35 shots (.177) | 28 shots (.22)
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Stock: FX UG1 Grip with AR15 mount, vertically adjustable recoil pad
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Calibers: .177 (4.5mm) | .22 (5.5mm)
Barrel Options
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Compact: Superior STX 500mm
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Standard: Superior STX 600mm (500mm for UK sub-12ft)
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Sniper: Superior STX 700mm
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Extended: Superior Heavy STX 800mm
Performance
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Shot Capacity: .177 – up to 375 shots | .22 – up to 330 shots
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Energy Output: .177 – up to 47 J / 35 ft-lbs | .22 – up to 117 J / 87 ft-lbs
- Note: Maximum FAC power output figures using slug ammunition, slug power kit, and 800mm barrel.
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Fill Pressure: Max 250 bar (3625 psi)
Controls & Optics
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Safety: Switch style
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Optics Rail: Dual rail system—adjustable, removable 30 MOA Picatinny rail on 9-11mm dovetail
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Trigger: QST (Quick Set Trigger) with adjustable reach, height, and blade angle. Configurable for Match, Hunter, and additional modes
Muzzle & Pressure Monitoring
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Muzzle: Built-in shroud system with additional moderator and detachable muzzle (variations by country)
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Pressure Gauges: Dual WIKA gauges monitoring air tube and regulator pressure
Air System
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Capacity: Compact 300cc | Standard 480cc | Sniper 580cc | Extended 580cc
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Cylinder: Carbon fiber wrapped, removable
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Charging: Foster Quick Disconnect
Dimensions & Weight
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Compact: 640mm (25") | 2.8 kg (6.10 lbs)
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Standard: 860mm (34") | 3.1 kg (6.85 lbs)
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Sniper: 1000mm (39") | 3.25 kg (7.15 lbs)
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Extended: 1120mm (44") | 3.35 kg (7.35 lbs)
Additional Features
- Brass Piston AMP MkII Regulator (externally adjustable; dual in some low-powered configurations)
- Quick Tune System with micro/macro hammer spring tension adjustment
- Valve adjuster for valve flow tuning
- Interchangeable Caliber System
- Multiple Picatinny accessory rails (sides and bottom)
- Accessory mount for angled pressure gauge
- Tailored cut-out hard case included
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Plenum: Power Plenum 750 (75cc volume)
