CYMA (6x) Metal M4 / M16 130 Round AEG Airsoft Magazine/Clip - Mid-Cap - (6x) Cyma M4/M16 140 Round Airsoft Magazine Mid-Cap Standard M4/M16 140 Round Airsoft Magazine (case lot of 6) FULL Metal construction Manufacted and made by Cyma, one of the best names out there Must be loaded with a Speed-Loader