"For rifle and pistol-caliber carbine shooters who want an enclosed circle-dot optic on the Aimpoint T1/T2 ecosystem, the Osight R Enclosed Red Dot Rifle Sight hits the mark. Featuring a 7075-T6 aluminum body and enclosed design that protects the emitter from water, dirt, and dust, the Osight R Red Dot is an incredibly robust optic designed for real-world operating conditions. The large 1.1""x0.87"" window and combination of 2 MOA dot and 65 MOA circle make it easy to pick up fast-moving targets. The reticles are independently selectable and manually controllable for brightness, with a dedicated night vision button on the left side. The Osight R comes with multiple mounts: one for the standard AR-15 sightline and one low-profile mount. Plus, it operates for up to 180,000 hours on one CR2032 battery (included). 100% waterproof to IPX8 standards. Enclosed design protects the emitter from water, dust, and debris Selectable reticles include 2 MOA dot and 65 MOA circle Manual brightness control Dedicated one-touch night vision button 7075-T6 aluminum construction Large 1.1""x0.87"" window for a wide field of view Sacrificial flip-up covers protect lenses Up to 180,000 hours of battery life on one CR2032 100% waterproof to IPX8 standards Aimpoint T1/T2 footprint Includes standard AR-15 sightline mount and low mount (both fit Picatinny rails)"