Battle Arms Development AR15 Enhanced Magazine Release Silver. These AR15 Magazine Catches & Releases 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 Specifications for Battle Arms Development AR15 Enhanced Magazine Release: Manufacturer: Battle Arms Development Gun Make: AR Platform Gun Model: AR-15 Fabric/Material: 7075 T6 Billet Aluminum Condition: New Package Contents: Battle Arms Development AR15 Enhanced Magazine Release What firearm models does the manufacturer say Battle Arms Development AR15 Enhanced Magazine Release is compatible with? The manufacturer says that Battle Arms Development AR15 Enhanced Magazine Release is compatible with AR-15Battle Arms Development BAD-EMR-RAW: AR15 Enhanced Magazine Release Silver