Magpul ,308 50 rnd drum magazine is legit! - Magpul Industries PMAG GEN M3 AR-10/M110/SR25 .308 Win/7.62x51mm NATO 50 Round Drum Rifle Magazine

Normally I am a metal mag onlt type of old guy but Magpul polymer mags hold up to the test. For a drum these are extremely easy to load use. They have a loadimg lever that takes all the tension out of the system as you press rounds in. They are strong as heck and can take the abuse. Alos they come with a nice cover to protect feed lips and keep contaminants out. Buy one or two. They are worth having around!