FX Panthera 500 PCP Air Rifle Reversible sidelever 300cc rear carbon fiber bottle 62cc Macro Plenum Improved 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*: 112 (.22), 56 (.25), 37 (.30) Max. energy**: 70 FPE (.22), 80 FPE (.25), 110 FPE (.30) Magazine capacity: 21 (.177), 18 (.22), 16 (.25), 13 (.30) Standard Side Shot magazine with deeper .51" lid for longer slugs Superior Smooth Twist X barrel Superior STX barrel liner 1/2"x20 male threads at the end of the shroud Adjustable hammer tension power wheel AMP MKII (Adjustable Match Precision) regulator 2-stage adjustable match trigger Dual angled manometers: bottle and regulated pressure Picatinny optics rail with 20 MOA cant Arca-Swiss/M-LOK forend rail Zero-angle AR grip Fully-adjustable ridged rubber buttstock Ambidextrous adjustable cheekpiece Rear Foster Quick-Disconnect fill port Barrel length: 500mm/19.685" Overall length: 38" Weight: 7.65 lbs. * - Using: 15.89gr pellets at 870 FPS (.22), 25.39gr pellets at 880 FPS (.25), 44.75gr pellets at 860 FPS (.30) ** - Using tungsten hammer and: 34gr slug at 960 FPS (.22), 43.5gr slug at 910 FPS (.25), 64gr slug at 880 FPS (.30)