Magpul

-For 5.56x45 NATO (.223 Remington)-True 10-round capacity that does not require limiters, pins, rivets, etc.-Next-generation impact & crush resistant polymer construction-Wide compatibility with non Colt-spec platforms-Anti-tilt follower & constant-curve internal geometryfor increased reliability-Long life stainless steel spring-Over-travel insertion stop on the spine-Flared floorplate aids magazine handling & disassembly-Pop-off Impact/Dust Cover to minimize debris intrusion & for ammunition protection in storage & transit