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Magpul® Rear Flip-Up Back Up Sight - MBUS® Gen 2, Black



Magpul's infamous Flip-Up BUIS. Now even smaller and cooler.

Maybe "cool" wouldn't be the word you use to describe your AR's bolt-ons, but Magpul's reinvented MBUS Gen 2's are certainly slick. They're made from that same magically indestructible polymer that's practically claymore-proof. They're only 1.3 ounces installed, and now they're even smaller: Measuring just 0.5" tall stowed, 1.5" long when deployed, and 2.6" long when stowed, the BUIS Gen2 Magpul irons are about as compact as it'll get.

Spring-loaded auto deploy with easy-click adjustments.

The MBUS gen2 sports a spring-loaded button push that allows the sight to lock upward instantly. Dual apertures provide near and far sight pictures, and a detent knob provides simple windage adjustments, no tools needed.

Additional Specifications

  • Height above rail: 0.51"
  • Length, deployed: 1.5"
  • Length, stowed: 2.6"
  • Weight w/ hardware: 1.3 oz.
  • Proudly made in the U.S.A
  • Pair with Magpul's MBUS front sight
  • Windage Adjustments: 0.7 MOA per click with 14.5" sight radius, 0.5 MOA per click with 20" sight radius