The PMAG D-50 is a durable, lightweight, highly reliable 50-round 5.56x45 NATO/.223 Remington polymer magazine for AR15/M4 compatible weapons. With a larger capacity than previous PMAGs, the PMAG D-50 gives the shooter 50 rounds of ammunition, without requiring a critical reload. The unique drum configuration keeps the height of the magazine manageable as well, allowing prone firing and easier storage. Features a 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, and others. FeaturesLightweight and highly reliableLoading lever for easy hand loadingEasy disassembly for cleaningLow profile design for prone shootingRugged polymer constructionCompatible with loading devicesFull magazine indication window Note: Optimized for use only with 5.56x45 NATO/.223 Remington cartridges. Use with other calibers such as .300 AAC Blackout is not recommended.