Aimpoint PRO Patrol Rifle Optic was designed with input from a distinguished group of current and former professionals, the Patrol Rifle Optic incorporates many never before seen features to maximize this sight's performance within the challenging conditions faced by modern law enforcement. A hard-anodized 30mm tube was utilized, enclosing a high efficiency circuit that allows the sight to be turned on and left on for up to three years using a single battery.