140 Round Mid cap magazine for M4/M16 Variants. Fits most brands including Ares, Elite Force, JG Tokyo Marui, G&P, TSD, Echo 1, SRC, Classic Army, Javelin, King Arms, Cybergun/Placo Sports, CYMA, and G&G. Pack of 10 magazines. Each mag is made of high quality ABS construction. Capacity is 140 rounds. No winding required, a speed loader is recommended for faster loading. The exterior of these magazines is textured for a secure grip and a magazine pull is also built into the base.