Magpul was founded in 1999 with the intent of developing a simple device to aid in the manipulation of rifle magazines while reloading under stress. The company’s name comes from this original product called the Magpul. Over the last seventeen years Magpul has continued to grow and develop using much the same mission and process with a focus on innovation, simplicity, and efficiency.

The 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 AR15/M16 platform.

Features and Specifications:
Manufacturer Number: MAG248-GRY
Magpul AR-15 MBUS Gen 2 Flip-Up Rear Sight Gray
Injection Molded Folding Back Up Sight
Impact resistant polymer construction provides light weight and resists operational abuse
Spring-loaded flip up sight easily activated from either side or by pressing the top
Detent and spring pressure keeps sight erect but allows for unobstructed folding under impact, etc.
Clamps to MIL-STD-1913 Picatinny/STANAG 4694 receiver rail and provides the same height-over-bore as standard A2 irons
Protective wings shield the dual, same plane flip apertures
Sight can still be folded with either large or small aperture in position
Detent knob easily and positively adjusts Windage
Made in the USA
Overall Weight 1.3oz
Overall Height Stowed .51"
Overall Length Stowed 2.6"
Center of Aperture to top of rail 1.42"
Color: Stealth Gray

Fits:
AR-15, AR-10, DPMS-LR308 and similar pattern variants
Note: The dual aperture MBUS Rear Sight is adjustable for windage and fits most 1913 Picatinny rail equipped weapons, but is specifically tailored to the AR15/M16 platform