The SIG Air P320 is not just an airgun, it's a SIG. SIG's modular, striker-fired pistol is imitated here featuring a full blowback metal slide, steel rifled barrel and a few built-in performance advantages low audible profile, practice space versatility and radically less expensive ammunition. The SIG Air line of pistols allows shooters to train for a quick, accurate response. Product Specifications Model: P320 ASP Operating System: 12 Gram CO2 Caliber: .177 Cal Muzzle Velocity: Up to 430 fps Trigger Weight: 6.75 lb(31N) Accessory Rail: M1913 Mags Included: (1) 30 Round Pellet Magazine Overall Length: 9.6 inch Weight: 2.2 lbs