This is a high powered high-end heavy weight CO2 6mm black pistol which features All In One CO2 technology. The all in one CO2 magazines can hold the CO2 cartridge as well as the BBs. This gun is non-blowback and semi automatic. It can fire up to 150 BBs with one CO2 cartridge.  Comes with 2 interchangeable sights (1 Fiber Optic and 1 Standard) The design of this C02 airsoft BB gun is similar to the 1911 .45 caliber Historic sidearm of the American soldier for 80 years. 350 FPS