Magpul makes high quality injection molded parts and accessories, primarily for the AR-15 rifle platform, right here in the USA. Polymer backup sights are popular for several reasons, including low weight, quiet operation, and durability. High quality polymer can take a certain amount of abuse without breaking, and still return to its original form, unlike metal, which may permanently deform, or even break.
Features and Specifications:
Manufacturer Number: MAG248-FDE
Magpul MBUS Gen 2 Flip Up Rear Sight
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
Overall Weight 1.3oz
Overall Height Stowed .51"
Overall Length Stowed 2.6"
Center of Aperture to top of rail 1.42"
Finish: Flat Dark Earth
Made in the USA
AR-15, AR-10, DPMS-LR308 and similar pattern variants
The dual aperture MBUS Rear Sight is adjustable for windage and fits most 1913 Picatinny rail equipped weapons, but is specifically tailored to the AR-15/M16 platform