Magpul Industries, MBUS Back-Up Front Sight Gen 2, Fits Picatinny Rails, Flip Up, Gray

Spring loaded flip up sight Easily activated from either side or by pressing the top Protective wings shield the spring-locking A2 front sight post Polymer construction provides light weight and resists abuse Detent and spring pressure keeps sight in place but allows for unobstructed folding under impact Product Description   The MBUS (Magpul Back-Up Sight) is a low-cost, color injection molded, folding back-up sight. The MBUS Front Sight is adjustable for elevation and fits most 1913 Picatinny-railed hand guards, but is specifically tailored to the AR15/M16 platform.