Shop › PROMAG AR15 7.62X39 50RD DRUM BLK PROMAG AR15 7.62X39 50RD DRUM BLK $134.99 ProMag Industries Drum Magazine, 7.62X39MM, 50 Rounds, Fits AR-15 Pattern Firearms Chambered in 7.62X39mm, Steel/Polymer Construction, Black DRM-A111 Quantity: Add To Cart Added! ProMag Industries Drum Magazine, 7.62X39MM, 50 Rounds, Fits AR-15 Pattern Firearms Chambered in 7.62X39mm, Steel/Polymer Construction, Black DRM-A111