The Leupold Mark AR MOD-1 will bring out every ounce of accuracy from your AR or bolt action rifle. The ballistic matched tactical turrets are calibrated to the popular .223 remington 55gr FMJ at a velocity of 3100 feet per second. With the Mark AR MOD-1 atop your rifle, dialing for known distance at extreme ranges a breeze. The sleek body features a locking fast focus eye piece, tactical power selection ring and 2nd generation Argon/Krypton waterproofing. Leupold tactical riflescopes are manufactured with the quality assurance that can only be acquired in the U.S.A. and the MARK AR MOD-1 is no exception, backed by the Legendary Leupold full lifetime warranty.