1.45 Degree offset folding Rear and front sight perfect for AR15 shooters looking for offset iron sights
2. Fits onto receiver height Weaver, Picatinny, MIL-STD 1913 type rails
3.The A2 Dual Aperature (Large & Small) Rear sight is fully adjustable for windage, also with a Large windage knob
4.Rear sight folds back flat for a lower profile and will fit under the majority of scopes out in the market
5.The A2 front sight post is fully adjustable for elevation
6. Front sight folds forward flat for a lower profile.