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.

Made in the USA.

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