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.
FEATURES
- SPRING-LOADED FLIP UP SIGHT: Easily activated from either side or by pressing the top. Protective wings shield the spring-locking A2 front sight post.
- IMPACT-RESISTANT POLYMER CONSTRUCTION: Polymer construction provides light weight and resists operational abuse.
- DETENT AND SPRING PRESSURE KEEPS SIGHT ERECT: Detent and spring pressure keeps sight erect but allows for unobstructed folding under impact, etc.
- CLAMPS TO MOST MIL-STD-1913 PICATINNY RAILS: Compatible with most MIL-STD-1913 Picatinny / STANAG 4694-railed hand guards* 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, w/ hardware: 1.2 oz.
- 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.
