Featuring a lightweight aluminum body with a corrosion-resistant black Teflon® coating and anodized finish, the D&H AR-15 300 AAC Blackout 10-Round Aluminum Magazine offers lasting reliability and dependable service in virtually any environment. The high-tensile 17-7PH spring and proprietary hi-vis polymer follower deliver smooth operation, as well as advanced corrosion resistance. Advanced internal and external geometries ensure friction-free performance and deliver a precise fit for unmatched reliability and lasting service. Plus, this magazine far exceeds military specifications and is backed by a legendary manufacturer’s warranty for lasting service you can depend on.