Our 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. Specifications: Model P320 Accessory Rail M1913 Operating System 12 Gram CO2 Caliber .177 cal Mags Included (1) 30rd Pellet Mag Overall Length 9.6 in. Trigger Weight 6.75 lb (31 N) Muzzle Velocity Up to 430 fps* Weight 2.2 lbs This listing complies with eBay's air gun guidelines found here and I will only sell and ship air guns to buyers in jurisdictions where permitted by applicable laws http://pages.ebay.com/help/policies/firearms-weapons-knives.html