This MFT Mag is designed for the AR10A/SR25/M110 pattern rifles. And for use with SAAMI-spec 7.62x51/.308 Winchester ammunition. New material technology and manufacturing processes resulted in enhanced strength, durability, and reliability to exceed demanding military performance specs. Next generation long glass fiber polymer Ribbed front and rear gripping surface Tool-less disassembly with double floor plate safety release tabs Long-life stainless steel spring Four-way anti-tilt self-lubricating follower Flared floor plate Oversized bolt catch Paint pen dot matrix