Magpul MBUS Rear Sight Flip-Up Back-Up Sight

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.

• 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
• Clamps to most any MIL-STD-1913 Picatinny / STANAG 4694 railed hand guard and provides same height-over-bore as standard A2 irons
• Protective wings shield spring-locking A2 front sight post
• Can still be folded with either large or small aperture in position
• Detent knob easily and positively adjusts windage
• Color: Black
• Windage adjustment: 0.7 MOA (0.754"/100m) per click with a 14.5" sight radius
• Windage adjustment: ~0.5 MOA (0.547"/100m) per click with a 20" sight radius
• Height above rail (stowed): Approx. 0.51"
• Center of aperture to top of rail: 1.42"
• Length: 2.6" (stowed), 1.5" (deployed)
• Weight: 1.3 oz.
• Made in USA