Burris T.M.P.R. Battery Pack Riser Only for TMPR FastFire M3 Use the Burris Optics Battery Pack Riser when you want to use the TMPR FastFire M3 reflex sight by itself. The battery pack runs on one included CR2032 battery and utilizes the same type of power-sharing connectors as the rest of the TMPR sight system to provide additional power as well as a solid mounting platform for the sight. Includes: Burris Optics Battery Pack Riser for TMPR FastFire M3, CR2032 Battery, Torx Wrench, and 2 x Mounting Bolts Features: - Use FastFire M3 Stand-Alone - Provides Power Plus Solid Mounting - Includes Mounting Hardware Kit