Aimsports ar low profile front sight is for use with standard height ar-15 rear sights.Features- ball bearing pivot detent, automatically locks into position when raised, flip-up posi-lock design to guarantee zero, quick detachable with adjustable a2 square post, uses standard a2 sight post 0.02" and same plane handguard/upper receiver height.0.65 moa on 16" rifles and 0.49 moa on a4 20" rifles.Type: Flip Up Front/RearFrame Material: Aircraft Garde AluminumFrame Color: Black AnodizedFirearm Fit: AR-15Style: Low Profile Flip UpFront Material: AluminumRear Material: AluminumFront Color: Black AnodizedElevation Adjustment: 0.49 MOA A4 Rifle/0.65 MOA M4 CarbineFirearm Type: AR Platform