FX Crown VP MkII Pre-charged Pneumatic Air Rifle, Synthetic Stock Ambidextrous thumbhole synthetic stock Smooth sidelever cocking system Superlight Smooth Twist X (STX) barrel system Interchangeable calibers and barrel liners (additional calibers and liners sold separately) Comes standard with the Superior liner MkII features a 28% plenum volume increase over previous version and larger valving to offer more power Fully shrouded barrel Externally adjustable AMP (Adjustable Match Precision) regulator Externally adjustable hammer spring tension 3-step transfer port adjustment Dual pressure gauges: one for air tube pressure, one for regulator pressure 400cc air cylinder Max fill pressure is 232 bar (3,365 psi) Magazine capacity: 22 rds. (.177), 18 rds. (.22), 15 rds. (.25), 13 rds. (.30) Muzzle energy: 28 FPE (.177), 54 FPE (.22), 65 FPE (.25), 91 FPE (.30) Shots per fill: 150 (.177), 110 (.22), 80 (.25), 35 (.30) 500mm (19.685") orl 600mm (23.62") barrel option Picatinny scope rail with 20 MOA compensation built in 500mm barrel models have an overall length of 45" with moderator 600mm barrel models have an overall length of 49" without moderator Two-stage adjustable, match trigger Adjustable buttpad Male quick-disconnect Foster fitting Includes one magazine and 3-year transferable warranty