Battle Arms Development, Enhanced Magazine Release, Anodized Finish, Red, Aluminum Construction WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. Mil-spec Drop in 7075-T6 Aluminum Anodized Finish, Red Lightweight, .002 Ibs V Shaped Face with Horizontal Serrations Precision CNC Machined for billet 7075-T6 Aluminum (not 6061) in an anodized finish, the BAD-EMR features a unique, fully solid "V" shaped button face with horizontal serrations (no through hole). The concave V-Groove button face offers an excellent ergonomic feel and self-centers the index finger as pressure is applied. The horizontal, parallel serrations help slippage in the vertical orientation while minimizing drag in the horizontal direction for finger retraction. The BAD-EMR also features a lightweight skeletonized back to offset the weight gained from the fully solid button face and slightly increased height to equal the weight of the standard mil-spec magazine release (approximately 0.002 lbs). The BAD-EMR is compatible with all lower receivers that accept mil-spec magazine release buttons.