Engineered for reliable field performance, the Duramag® AR-15 6.8mm SPC 20-Round Stainless Steel Magazine features a robotically welded 410 stainless steel body with a proprietary Teflon T-360™ finish for lasting corrosion resistance. The LipLock feed lip design keeps rounds secured and in proper alignment for jam-free reliability, while the EverFlex™ anti-fatigue steel spring protects against binding, and the Advanced Geometry Follower™ delivers smooth, snag-free feeding performance.