Magpul MBUS Gen II Rear Sight, Black - MAG248-BLK

The Magpul MBUS is a low-cost, color injection molded folding back-up rear sight with dual aperture and windage adjustability (0.7 MOA/0.5 MOA). It mounts to M1913 Picatinny rails and is specifically designed for AR-15/M16 platforms. The polymer construction keeps weight minimal while maintaining durability for field use.