Caliber: 308 Win Model: PMAG Series D-50 Finish: Black Material: Polymer Capacity: 50rd Style Drum Model Fit: AR-10, M110, SR25 Weight: 1.70 lbs. Made in the USA, the Magpul PMAG D-50 is a rugged, lightweight, and reliable 50-round polymer drum magazine designed for 7.62x51 NATO/.308 Winchester ammunition for SR25/M110 pattern rifles. The Magpul PMAG D-50 shares its DNA with the legendary Magpul PMAG GEN M3, which includes next-generation impact and crush-resistant polymer construction and the ability to seat fully loaded on a closed bolt. Robust stainless-steel internals withstand corrosion and long-term storage while loaded with no loss of function, spring fatigue, or reliability concerns. A slip-on semi-rigid dust cover prevents grit and debris intrusion during storage and transport. An anti-glare translucent window on the rear of the drum makes for quick positive visual indication of remaining ammunition.