Armorer Works AW Custom 350rd Gas Adaptive Drum Magazine for EMG SAI Red / AW NE Series / WE (WE-TECH) Single Stack 1911 GBB Pistols AirsoftArmorer Works AW Custom 350rd Gas Adaptive Drum Magazine for EMG SAI Red AW NE Series WE (WE TECH) Single Stack 1911 GBB Pistol. Made out of metal and polymer. Injection molded polymer body. Can withstand the rigors of field use. Manual winding system. Comes with customizable shockproof pads. Shockproof pads for extra protection. Changeable shockproof pads. Interchangeable adaptive magazine system. Huge gas reservoir. Suitable for AW Armorer Works