The Battle Arms Development Aluminum Enhanced Magazine Release features a unique, solid V shaped button face with horizontal serrations to provide an ergonomic feel that centers your finger when you apply pressure to the button and help avoid slippage and minimizes drag. These Pistol Parts by Battle Arms Development are precision CNC machined from billet 7075-T6 aluminum and has a lightweight skeletonized back and a slightly increased height to make it nearly the equal weight of the standard mil-spec magazine release. Compatible with all lower receivers that accept mil-spec magazine release buttons, the Battle Arms BAD-EMR Extended Magazine Release is the perfect upgrade!