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.

Made in U.S.A.

• Impact resistant polymer construction provides light weight and resists operational abuse
• Spring-loaded flip up sight easily activated from either side or by pressing the top
• Detent and spring pressure keeps sight erect but allows for unobstructed folding under impact, etc.
• Clamps to most any MIL-STD-1913 Picatinny/STANAG 4694 railed hand guard* and provides the same height-over-bore as standard A2 irons
• Protective wings shield the spring-locking A2 front sight post
• Elevation adjustment tool included, but most aftermarket A2 front sight adjustment tools may be used as well

Specifications

• Weight, w/ hardware: 1.2 oz.
• Height above rail, stowed: ~0.51 in.
• Length, stowed: 2.6 in.
• Length, deployed: 1.5 in.
• ~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

The Magpul MBUS Front Sight in OD Green offers a reliable and lightweight solution for your shooting needs. Designed for the AR15/M16 platform, this adjustable sight features a spring-loaded flip mechanism that can be activated from either side or by pressing the top. Crafted from impact-resistant polymer, it withstands operational abuse while remaining easy to deploy. Its protective wings safeguard the spring-locking A2 front sight post, ensuring durability and performance. Compatible with most 1913 Picatinny-railed handguards, it maintains the height-over-bore of standard A2 irons. Elevation adjustments are simple, making this sight an essential accessory for any firearm enthusiast.