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.

FEATURES

• 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 

MBUS – Front

• Weight, w/ hardware: 1.2 oz.

• Height above rail, stowed: ~0.51 in.

• Length, stowed: 2.6 in.

• Length, deployed: 1.5 in.

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

ITAR
International Traffic in Arms Regulations Controlled Product

EXPORT NOTICE: This is an item controlled for export by the International Traffic in Arms Regulations (ITAR). These controls take the form of export regulations and license requirements. As part of the express consideration provided for receipt of READY Firearms' goods, and / or services, you, our customer, acknowledge that the export, re-export, or other transfer, directly or indirectly, of the goods, and / or services provided by READY Firearms in violation of U.S. law is prohibited. Customers acquiring ITAR goods, and / or services from READY Firearms shall be responsible for obtaining any necessary U.S. or other government authorization required to ensure compliance with applicable export laws.