NcStar AR-15 45 Degree Offset Flip-Up Rear Sight Black

45 Degree offset folding Rear sight perfect for AR15 shooters looking for offset iron sightsFits onto receiver height Weaver, Picatinny, MIL-STD 1913 type railsThe A2 Dual Aperature (Large & Small) Rear sight is fully adjustable for windage, also with a Large windage knobRear sight folds back flat for a lower profile and will fit under the majority of scopes out in the marketWeight: 2.6 oz.