The Magpul Back-Up Sight, or MBUS, exemplifies what a rear sight should be—affordable yet dependable. Designed as a folding back-up option, it is crafted through color injection molding to ensure both cost-effectiveness and durability. This sight stands ready to serve when needed most.
Specifically tailored for the AR15/M16 platform but versatile enough to fit any firearm with a 1913 Picatinny rail system, the MBUS Rear Sight offers dual aperture functionality that can be adjusted for windage with ease. Its construction from impact-resistant polymer ensures that it remains lightweight while resisting operational abuse.
The spring-loaded flip-up mechanism allows rapid deployment of the sight from either side or by pressing down on top—a feature critical in dynamic scenarios where time is of the essence. Once erected, detent and spring pressure maintain its position firmly; however, it will fold unobstructedly under significant impact if necessary.
This rear sight maintains standard A2 height-over-bore alignment thanks to its MIL-STD-1913 Picatinny/STANAG 4694 receiver rail compatibility. Protective wings guard its dual apertures which remain on the same plane whether using large or small settings—both options being equally accessible even when folded down.
A detent knob provides straightforward and positive windage adjustments ensuring precision tuning during use without added complexity.
The Magpul MBUS Rear Sight is an embodiment of practical design meeting robust engineering—a must-have accessory enhancing your rifle's readiness at all times.