DealThe MBUS (Magpul 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 .223 platform. FREE shipping! from Nimrod's Wares (Product PP-ONHP-NS4U) |