Magpul | PMAG D-50 | 300 AAC Blackout | Black

The PMAG D‑50 packs 50 rounds into a drum magazine built around rugged, lightweight polymer construction and corrosion‑resistant steel springs, with a ratchet loading lever that relieves spring tension so you can drop rounds in by hand instead of fighting a full magazine. A translucent rear cover gives an instant visual round count, and it's built to be left loaded for extended periods without any drop in reliability or service life -⁠- a real concern with a lot of high‑capacity drums. Available across 5.56, 7.62/.308, 9mm, and other platform‑specific chamberings, each engineered around that cartridge's actual dimensions rather than a universal compromise.