p>The AR-536 is a compact, fast-acquisition optic designed for lawmen, military personnel, and competitive shooters who want additional range.The rotary, 10-position power selector allows quick changes from red to green powered reticle, or clear, crisp black reticle when power is off. With five red and five green power levels, all lighting conditions can be quickly matched. A CR2032 battery powers the reticle.The Ballistic CQ? reticle features holdover dots good out to 600 yards. They work best with 5.56 or 7.62 ammunition.Picatinny rails allow piggybacking of additional sights, lasers or lights. And the Burris Forever Warranty? backs the entire, rugged design.BLEMISHED products may or may not include accessories.