The D&H® AR-15 .223/5.56 10-Round Aluminum Magazine is a California-compliant magazine, designed and manufactured for exceptionally smooth feeding performance and lasting durability in less-desirable environments. This standard-capacity magazine boasts a heat-treated aircraft aluminum body with caliber-optimized feed lips and ribbing, while a black Teflon coating offers superior corrosion-resistant protection. The 17-7PH spring and D&H proprietary follower ensure smooth operation, and the precision-machined magazine catch windows deliver a snug, reliable fit for wobble-free performance and reliable feeding.