Shop › MAG HK MR762 308WIN 20RD BLK MAG HK MR762 308WIN 20RD BLK $64.99 Heckler & Koch Magazine, 308 Winchester, 20 Rounds, Fits MR762, Polymer, Black 234708S Add To Cart Added! Heckler & Koch Magazine, 308 Winchester, 20 Rounds, Fits MR762, Polymer, Black 234708S