The Crosman Full Auto R1 BB air gun maximizes backyard fun! Fueled by two 12-gram CO2 cartridges and a 25 round drop out magazine, you wil have target cans flying in no time. The gun features a genuine feel, familiar controls and an intense 1400 round per minute rate of fire, all at a jaw dropping rate of up to 430 fps. Even better, the gun is fully customizable with a 6 position adjustable stock and a Picatinny rail that provides endless accessorie mounting opportunities. Stay on target with the included rail mounted Red Dot sight and "Take it Outside" with Crosman. + Crosman 12-Gram Powerlet CO2 Cartridges are for shooters who want to focus on their targets instead of working a pump. We've been using CO2 to run airguns for nearly a hundred years, and we've learned that the most important thing is a clean, tight fit. When you drop a Powerlet into your gear, you're getting a source of energy that keeps your shots moving exactly how they should. The neck of every cartridge is made to seal tight the moment it's pierced. If a cartridge doesn't fit right, you lose gas, which means your shots start to drop and you get fewer rounds for your money. These cartridges stay sealed, so the pressure stays where it belongs, behind the BB. This lets you fire off quick follow-up shots and keeps the moving parts in your airgun working properly. These are a staple for any range day. They are versatile enough to work in almost any brand of air rifle or pistol, and they're a favorite for airsoft and paintball players, too. Using genuine Crosman gas also helps look after your equipment. We make sure the gas is clean so it doesn't gum up the internal seals of your gun. It's a simple, no-nonsense way to make sure your gear stays ready for the next time you head out to shoot.