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.
Key Features
- Spring-Loaded Flip Up Sight: Easily activated from either side or by pressing the top
- Protective Design: Wings shield the spring-locking A2 front sight post
- Impact-Resistant Polymer Construction: Provides light weight and resists operational abuse
- Reliable Deployment: Detent and spring pressure keeps sight erect but allows for unobstructed folding under impact
- Universal Compatibility: Clamps to most MIL-STD-1913 Picatinny rails and provides the same height-over-bore as standard A2 irons
Technical Specifications
- Position
- Front
- Height above rail (stowed)
- ~0.51 in.
- Length (deployed)
- 1.5 in.
- Length (stowed)
- 2.6 in.
- Weight (with hardware)
- 1.2 oz.
- Elevation Adjustment (14.5" sight radius)
- ~1.6 MOA (1.886"/100m) per click
- Elevation Adjustment (20" sight radius)
- ~1.2 MOA (1.367"/100m) per click
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.
