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.
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Impact resistant polymer construction provides lightweight and resists operational abuse
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Spring-loaded flip up sight easily activated from either side or by pressing the top
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Clamps to MIL-STD-1913 Picatinny/STANAG 4694 receiver rail. A2 height
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Protective wings shield the spring-locking A2 front sight post
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Adjustment tool included but most A2 adjustment tools work as well
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Note: Cannot be mounted to a railed gas block due to excess heat
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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
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California Proposition 65 Notice: This product contains chemicals known to the State of California to cause cancer, birth defects, and/or other reproductive harm.
