The Magpul PMAG D-50 is a rugged, lightweight 50-round polymer drum magazine designed for 7.62x51 NATO/.308 Winchester ammunition for SR25/M110 pattern rifles. It s capable of using longer-than-SAAMI-spec match ammunition, up to 2.830 OAL, such as M118LR. Engineered to the same exacting standards as the famous Magpul PMAG and PMAG D-60 drum magazines, the D-50 continues the PMAG tradition of high-capacity performance and dependability.