Magpul MBUS Rear Sight - Flat Dark Earth

Manufactured by Magpul Industries
Manufactured by Magpul Industries
64 Reviews

In Stock

Standard orders will ship out the same business day if ordered by 3:30 pm CST. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination.



Magpul continues to grow and develop based on innovation, simplicity, and efficiency. At Magpul, mission driven requirements inform their product design, materials, and manufacturing, focusing on efficiency without sacrificing quality or performance.

The Magpul MBUS Back-Up Sight is a low-cost, color injection molded, folding back-up sight. Specifically tailored to the AR-15/M16 platform, the dual aperture MBUS Rear Sight is adjustable for windage and fits most 1913 Picatinny rail equipped weapons.

  • ~0.7 MOA (0.754"/100m) per click with a 14.5" sight radius
  • ~0.5 MOA (0.547"/100m) per click with a 20" sight radius
  • Impact resistant polymer construction
  • Spring-loaded flip up sight
  • Detent and spring pressure keeps sight deployed
  • Compatible with most Picatinny receiver rails
  • Provides the same height-over-bore as standard A2 irons
  • Protective wings shield the dual, same plane flip apertures
  • Sight may be folded with either large or small aperture in position
  • Detent knob easily and positively adjusts windage
  • Height - Stowed: ~0.51”
  • Center of aperture to top of rail: 1.42”
  • Length - Stowed: 2.6”
  • Length - Deployed: 1.5”
  • Weight: 1.3 oz
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ColorFlat Dark Earth
Fixed FoldingFolding
Manufacturer.Magpul Industries
Weight1.3 Oz

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see

Ratings & Reviews

64 reviews


Great sight


Great sight and a great value

MagPul MBUS Gen 2 Flip-up Rear Sight Dark Earth


Haven't installed it yet, looking forward to getting put on my FDE AR. Primary Arms was excellent with their service. Fast shipping, quick response and they were one of the few that had the sight in stock.. Thanks

Solid Backup sight


I have this in black on my AR and it has been a great backup sight. Needed it in DE for a birthday build for a friend. Several sight picture options depending on light and range and easy windage adjustment. Tight fit on the flat top but easy to position behind a red dot or reflex. Must have for any AR.

Great back-up sight


I love Magpul's back-up sights. They are light and reliable. I run these on all of my AR-style rifles.

Pop up site


I love these sites! Pop up pop down, they hold zero on my ar. When down I have no problem with mounting a scope. I've had them on my 1st ar for a few years and still working great.

And this one makes 6


I now have 6 AR builds equipped with MBUS sights. They are likely the best folding lightweight AR sight for the money. They look good, work well and are much more durable than one would guess. Highly recommend.

Outstanding company!


I ordered the mbus sight first thing in the morning before work, and it was shipped by my lunch break that day. Ordered it on Wednesday, and with the free shipping offer it was still at my house by Friday. After having issues with another company during this transaction, I was blown away by the customer service of Primary Arms. As long as they carry what I am going to purchase, they have my business for life!

MBUS Gen 2


It is MagPul. Works as advertised.



its Magpul enought said

Works great


Light weight and works like a sight should.