Jing Gong - M4/M16 450 round 6mm BB Hi-Cap Magazine - Black is a huge capacity Airsoft 6mm BB Magazine designed for use with weapons such as the M4 / M16. The magazine is constructed with an Alloy shell with Polymer internals. Holding a staggering 450 BBs, the magazine is fed by winding the wheel at the bottom of the magazine. This is possible to do even if wearing bulky gloves, as small teeth on the wheel mean that you will always be able to find and grip the wheel. This magazine is perfect for those Airsofter who want to be able to put up a withering hailstorm of 6mm BBs, or simply the Airsofter who finds that they are in constant need of extra ammunition. The magazine is designed for Jing Gong / Tokyo Marui type magazine wells but may fit other manufacturers.