Buy your Daniel Defense offset rails from BattleHawk Armory today! The Daniel Defense 1 o'clock Offset rail is optimized for mounting miniature red dot optics in the 1 o'clock (right hand) or 11 o'clock (left hand) positions for quick, non-magnified, transitions when employing magnified primary optics on AR-type rifles with Mil-STD 1913 rails. The geometry allows for zero cheek weld shift during the transition.