The MBUS (Magpul® 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.
An elevation adjustment tool is included, but most aftermarket A2 front sight adjustment tools may be used as well.
| Position | Front |
|---|---|
| Height above rail, stowed | ~0.51 in. |
| Length, deployed | 1.5 in. |
| Length, stowed | 2.6 in. |
| Weight, w/ hardware | 1.2 oz. |
| Other Specs | ELEVATION ADJUSTMENT
~1.6 MOA (1.886″/100m) per click with a 14.5″ sight radius ~1.2 MOA (1.367″/100m) per click with a 20″ sight radius *NOTE: Cannot be mounted to a railed gas block due to excess heat issues. Front MBUS must be mounted to a railed fore end on the same plane as the receiver rail. Because of this the sight is also not compatible with MOE Hand Guards. |
