KJ P226 E2 CO2 (KP-01E2)SPECIFICATIONS: System : Gas Blow Back Action : Semi auto Velocity : ~ 400 fps Length : 188 mm Weight : 1130 g Hop up : Adjustable Gas : CO2 Capacity : 24 + 1 FEATURES: Full Metal construction Functional Decocking Lever Under barrel 20mm rail for accessory attachment Can use KJ KP 01 KJ KP 01 E2 Green Gas Magazine for about 330 FPS output Package: Airsoft gun, Magazine, screw on inner barrel extension, ~200 rd 0. 2g BB, Instruction manual