FX King PCP Air Rifle, GRS Hunter/strong> Reversible sidelever (with compatible stocks) GRS Hunter Brown stock Removable 480cc carbon fiber wrapped bottle 62cc Macro Plenum (500), 156cc Magnum XL Plenum (600) High-power, short impulse valve Dynamic Block Over-the-barrel Dynamic Plenum design Quick Tune System Fill pressure: 250 BAR/3,625 PSI Shots per fill (500)*: 180 (.22), 90 (.25), 70 (.30), 30 (.35) Shots per fill (600)*: 128 (.22), 96 (.25), 56 (.30), 26 (.35) Max. energy (500)**: 70 FPE (.22), 80 FPE (.25), 113 FPE (.30), 135 FPE (.35) Max. energy (600)**: 82 FPE (.22), 91 FPE (.25), 130 FPE (.30), 173 FPE (.35) Magazine capacity: 21 (.177), 18 (.22), 15 (.25), 13 (.30), 10 (.35) Standard Side Shot magazine with deeper .51' lid for longer slugs Superior Smooth Twist X barrel Superior STX barrel liner (500), Superior Heavy STX barrel liner (600) Adjustable hammer tension power wheel AMP MKII (Adjustable Match Precision) regulator 2-stage adjustable match trigger Dual angled WIKA gauges: bottle and regulated pressure Picatinny optics rail with 30 MOA/9 MIL angle Dual Picatinny forearm accessory rails Angled offset ergonomic GRS grip Tool-free adjustable rubber recoil pad Tool-free ambidextrous adjustable cheekpiece Foster Quick-Disconnect fill port with dust cap Manual switch safety Barrel length: 500mm/19.685' (500), 600mm/23.6' (600) Overall length: 38.2' (500), 42.3' (600) Weight: 7.6 lbs. (500), 7.9 lbs. (600) Includes tailored cut-out case * - Using: For 500: 15.89gr pellets at 900 FPS (.22), 25.39gr pellets at 900 FPS (.25), 44.75gr pellets at 860 FPS (.30), 81gr pellets at 840 FPS (.35). For 600: 22gr hybrid slug at 900 FPS (.22), 26gr hybrid slug at 900 FPS (.25), 44.5gr hybrid slug at 900 FPS (.30), 68gr hybrid slug at 900 FPS (.35) ** - Using tungsten hammer and: For 500: 34gr slug at 960 FPS (.22), 43.5gr slug at 910 FPS (.25), 64gr slug at 890 FPS (.30), 81gr slug at 865 FPS. For 600: 34gr pellet at 1040 FPS (.22), 43.5gr slug at 970 FPS (.25), 64gr slug at 1020 FPS (.30), 93gr slug at 915 FPS (.35).