Magpul MBUS Pro 'flip-up' rear sight

This rear sight is made of steel with black melonite finish, and is extremely rugged and stable. It is windage-adjustable (half a MOA per click), and has a dual aperture, each option to be selected depending on environmental light, desired precision, distance and whether the target is moving or not. The height over rail of the sight is AR-15 absolute cowitness (1.41 inches/35.8 mm).

The sight firmly attaches to the rear of the Picatinny rail and can be flipped down when not in use.

Torque value is recommended to be until felt tight. Most manufacturers agree 25 inch/lbs to be a good value for metal on metal accessories. We recommend applying Loctite 243 to the mounting screw thread and marking the screw head to identify loosening.