- Polymer construction
- Spring-loaded flip up sight
- Protective wings shield the spring-locking A2 front sight post
- Elevation adjustment tool included
The MBUS (Magpul(R) Back-Up Sight) is a low-cost, color injection
molded, folding back-up sight. The MBUS Front Sight is adjustable for
elevation and fits most 1913 Picatinny-railed hand guards, but is
specifically tailored to the AR15/M16 platform.