FX King PCP Air Rifle, GRS Nordic Wolf Reversible sidelever (with compatible stocks) GRS Nordic Wolf 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 (.35). 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).