Magpul MBUS Rear Sight, FDE

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.

Spring-Loaded Flip Up Sight: Spring-loaded flip up sight easily activated from either side or by pressing the top; protective wings shield the dual, same plane flip aperatures; sight can still be folded with either large or small aperture in position; detent knob easily and positively adjusts windage

Impact-Resistant Polymer Construction: Polymer construction provides light weight and resists operational abuse

Detent and Spring Pressure Keeps Sight Erect: Detent and spring pressure keeps sight erect but allows for unobstructed folding under impact, etc

Clamps to Most MIL-STD-1913 Picatinny Rails: Clamps to MIL-STD-1913 Picatinny/STANAG 4694 receiver rail and provides the same height-over-bore as standard A2 irons

Specifications:

• Position: Rear
• Height Above Rail, Stowed: 0.51"
• Length, Deployed: 1.5"
• Length, Stowed: 2.6"
• Weight, w/ Hardware: 1.3oz
• Other: Center of aperture to top of rail: 1.42"
• Windage Adjustment:
  • 0.7 MOA per click with 14.5" sight radius
  • 0.5 MOA per click with 20" sight radius