Golden Eagle M8874 3/6-Shot Pump Action CO2 Airsoft Shotgun w/ Flip Up Sights, Picatinny Rail & M4 Crane Stock - Shell/CO2 Combo - (Black)Specifications: A gas shotgun that reproduces the Remington Arms M870 Tactical Series, which has stable performance and a wide variety of variations. Runs on 12g CO2 canisters. The full metal body gives it a solid look and feel. It uses a shotgun shell type magazine and can fire three shots simultaneously. It has a function to switch between 3 and 6 rounds of bullets, and also has a rapid fire function that allows continuous firing by cocking the gun