The Burris T.M.P.R. 5 Prism Sight is a modular system of purpose-specific optics that can be used individually or in combination to create the ultimate sight for any situation.Versatile and highly customizable, the Burris Optics TMPR 5 5x32 Prism Sight is the primary component in a modular system that allows you to mount an optional reflex dot sight (sold separately) and red laser sight (included) to add functionality to your kit without taking up additional rail space.Includes :Burris 300226 Modular TMPR 5 5x32 Prism Sight (Ballistic AR Reticle) - lets you enhance and expand the capabilities for added versatility.Burris 300221 Red Laser Sight - custom designed to work seamlessly with either the T.M.P.R. 3 or T.M.P.R. 5 perfect for low-light fast-action tactical shooting and home defense. Uses the large battery of the TMPR Sight, providing more power and lower weight than it would get relying on just its own battery power.Burris 410346 battery pack riser for any T.M.P.R. Prism Sight Accessory - You can 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.