The ASC® 5.45X39 AR-15 10-15/30-Round Stainless Steel Magazine features a durable 410 stainless steel body for superior reliability in harsh environments. The chrome silicon wire spring and anti-tilt polymer follower ensure smooth feeding performance, while the machined feed lips deliver a precise fit for added reliability. The polymer follower boasts a PTFE coating for additional lubricity. This magazine is also equipped with an easy-to-remove 300-series stainless steel floor plate, designed to deliver quick disassembly for maintenance and cleaning.