Magpul Industries MBUS Rear Sight Stealth Gray Polymer Flip-Up for AR-15/M16

The Magpul MBUS Sight Rear is a low-cost, color injection molded, folding back-up sight engineered as a lightweight, snag-free companion to your primary optic. Built from impact-resistant polymer in Stealth Gray, this GEN 2 MBUS clamps to any standard 1913 Picatinny rail and is specifically tailored for the AR-15/M16 platform.

A spring-loaded flip-up mechanism lets the dual-aperture rear sight deploy quickly from either side or by pressing the top, while a tool-less 0.50 MOA windage adjustment lets you zero without breaking out the bench tools. When folded, the low-profile design keeps the sight tucked out of the way of magnifiers and other accessories riding on the rail. The MBUS rear is a proven field-ready back-up for any AR-platform rifle.