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The Magpul MBUS (Magpul Back-Up Sight) is a lightweight, spring loaded flip up back-up sight. The dual aperture MBUS rear sight is adjustable for windage and fits most Picatinny rail equipped weapons, but is specifically tailored to the AR15/M16 platform. Made of a durable impact resistant polymer.


Color Black
Weight 1.3 oz.
Height above rail, stowed ~0.51 in.
Center of aperture to top of rail: 1.42 in.
Length, stowed: 2.6 in.
Length, deployed: 1.5 in.