Magpul’s B. A.D. (Battery Assist Device) was designed to address the shortcomings of an AR15’s reloading/malfunction-clearing process. Once installed, the B. A.D. extends the bolt release paddle to the right side of the weapon, allowing the user to operate the bolt release from the fire control / ready position with the right-hand trigger finger. The B. A.D. is a non-permanent upgrade, and attaches to the existing bolt catch via a single set screw. Features: Extends the bolt release paddle to the right side of the weapon, allowing the user to operate the bolt release from the fire control / ready position with the right-hand trigger fingerNon-permanent upgrade Attaches via one set screw Magpul B. A.D. Lever Battery Assist Device for AR15 MAG980-BLK