FX Redback Arrow PCP Air Rifle Sidelever 480cc rear carbon fiber bottle Quick Tune System Uses .357 caliber Air Bolts Fill pressure: 3,625 PSI/250 BAR Up to 8 shots per fill Barrel drum holds 8 arrows Max. power: 150 FPE Max velocity: 424 FPS with 375-grain arrow Adjustable hammer tension power wheel AMP MKII (Adjustable Match Precision) regulator 2-stage adjustable match trigger Manual safety Dual angled manometers: bottle and regulated pressure Picatinny optics rail with 60 MOA cant Arca-Swiss/M-LOK forend rail Ergonomic textured grip Molded tank cover/cheek rest w/adjustable ventilated rubber buttpad Foster Quick-Disconnect fill port Barrel length: 22" Overall length: 41.5" Weight: 7.4 lbs.