The aluminum Knight's Armament 45 degree offset mount puts the Aimpoint Micro T-1/H-1 at a 45 degree angle to the handguard. Allows the use of magnified optics as the main sight. Just roll the rifle slightly to use the Aimpoint Micro for close quarter shooting. Great for 3 Gun shooting. Mounts to standard picatinny rails with one cross bolt. Aimpoint bolts to the mount with the 4 screws that hold the standard Aimpoint mount on. Aimpoint sight sold separately.