FX Impact M3, PCP Air Rifle FX Smooth Twist X Superior (STX) barrel system Interchangeable calibers and barrel liners (sold separately) Power Block, redesigned rear block Externally adjustable dual AMP (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 Equipped with improved 72cc Power Plenum 720 - allowing for an even wider range of power adjustment .22 and .25 cal M3's feature Dual transfer ports - one optimized for pellets, one for slugs Male Quick Disconnect fitting Forward mounted reversible sidelever cocking Picatinny/Weaver optics mounting rail with 20 MOA compensation Picatinny accessory rails below cylinder and on each side of the forearm Two stage adjustable match trigger Improved, Wika dual pressure gauges: one for air cylinder pressure, one for second regulator pressure. First regulator has a standard FX gauge.  Height adjustable rubber buttpad AR15 style Hogue pistol grip AR15 style manual safety Side Shot magazine capacity: 38 rds. in .177, 28 rds. in .22, 25 rds. in .25, 21 rds. in .30 Maximum muzzle energy *: 38 FPE in .177 (w/ 700mm barrel, 20.5gr slug, 915fps) 84 FPE in .22 (w/ 700mm barrel, 40 gr slug, 970fps) 108 FPE in .25 (w/ 700mm barrel, 44gr slug, 1050fps) 128 FPE in .30 (w/ 700mm barrel, 65.5gr slug, 940fps) Includes one side-shot magazine and 3 year transferable warranty * - Power Block models 2022 and newer with FX Slug Power Kit installed. 600mm (23.62") Barrel, Standard Models: Available in .177, .22, .25 and .30 cal. Fixed, stackable moderator system Removable 480cc carbon fiber air cylinder Overall length of 34.25" 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. Fixed, stackable moderator system Removable 580cc carbon fiber air cylinder Overall length of 38.25" Weight: 7.15 lbs. Shots per fill: 330 in .22, 160 in .25 and 105 in .30 Tech Note: While the manual states the M3 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.