The MBUS (Magpul® Back-Up Sight) is a low-cost, color injection molded, folding back-up sight. The dual aperture MBUS Rear Sight is adjustable for windage and fits most 1913 Picatinny rail equipped weapons, but is specifically tailored to the AR15 / M16 platform.
Made in the USA.
| Attribute | Value |
| Type | Rear |
| Frame Material | Polymer |
| Frame Color | Black |
| Firearm Fit | AR15/M16 |
| Base Configuration | Picatinny Rail |
| Style | Folding |
| Windage Adjustment | Yes |
| Firearm Type | AR-Platform |
| Manufacturer Part Number | MAG248-BLK |