This 45 degree angled front & rear sight is for use with any standard ar-15 and locks positively in the up position with ball bearing pivot detent.It has a low profile and is constructed of black anodized aluminum.The set mounts to standard mil-spec 1913 picatinny rails.Flip up standard a2 front post 0.02".Flip up a2 dual aperture rear peep sight, small aperture: 0.070", large aperture: 0.200".Rear Color: Black AnodizedFrame Material: Aircraft Garde AluminumFrame Color: Black AnodizedFirearm Fit: AR-15Style: 45 Degree Low Profile Flip UpFront Color: Black AnodizedWindage Adjustment: 0.49 MOA A4 Rifle/0.65 MOA M4 CarbineElevation Adjustment: 0.49 MOA A4 Rifle/0.65 MOA M4 CarbineFirearm Type: AR Platform