SIG Sauer is excited to offer its own line of 5.56 NATO 30 round aluminum AR-15 magazines. This magazine will not only work with standard pattern AR-15’s but it will also work with the SIG Sauer M400, SIG Sauer 516, and Sig Sauer MCX platforms. The magazine is made from high-quality aluminum and it features a polymer anti-tilt follower and has a gray finish. This magazine is as durable as the SIG Sauer guns it will pair with.