When the situation demands fast shooting... And a big scope with a narrow field of view won"t cut it, the StikeFire red dot riflescope lets you shoot with both eyes open! With unlimited field of view and eye relief nothing gets you on target faster than this tough, shockproof and waterproof compact little red dot scope. The rugged StrikeFire red dot is a perfect match with the popular flat-top AR-15 rifles and is also compatible with night vision optics. The Strikefire has state-of-the-art circuitry, a typical battery life of 2000 hours, and automatically shuts down after two hours