Magpul MBUS Gen 2 Flip-Up Front and Rear Sight Set AR-15 Polymer Olive Drab

The MagPul Back Up Sight (MBUS) Flip-Up Sight Set is a durable, inexpensive Back Up Iron Sight option specifically tailored for the AR-15 platform. Constructed of high impact polymer, the sights are lightweight, unobtrusive, and capable of withstanding harsh environments and rough handling in the field. The Flip-Up Sight is spring loaded, popping up instantly when activated by pressing down on either of its side levers or from the top. The sight remains upright under spring and detent pressure,