Magpul Industries Magazine, PMAG D-60, 223 Remington/556NATO, 60 Rounds, Fits AR-15/M4, Black MAG576-BLK The PMAG D-60 AR/M4 GEN M3 is a durable" lightweight" highly reliable 60-round 5.56x45 NATO/.223 Remington polymer drum magazine for AR15/M4 compatible weapons. With a larger capacity than previous PMAGs" the PMAG D-60 gives the shooter 60 rounds of ammunition" effectively allowing the same round count as two standard capacity 30-round magazines without requiring a critical reload. The unique drum configuration keeps the height of the magazine manageable as well as allowing for prone firing and easier storage. Features an easy-to-use loading lever" paint pen dot matrix for easy marking" and a rear window for instant capacity indication. Compatible with a wide range of NATO firearms such as the M4" M16" SCAR MK16/16S" HK416" MR556" M27 IAR" IWI Tavor" and others.