Magpul MBUS Rear Back Up Sight - FDE

The MBUS (MagpulA(R) Back-Up Sight) is a low-cost, color injection molded, folding back-up sight. The dual aperture MBUS Rear Sight is adjustable for windage and fits most 1913 Picatinny rail equipped weapons, but is specifically tailored to the AR15/M16 platform.SpecificationsMBUS - Rear Gen 2Weight, w/ hardware: 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.