Magpul MBUS Gen 2 REAR Back Up Iron Sight - BLACK

MSRP: $57.95
Your Price: $49.95
(You save $8.00 )
(28 reviews) Write a Review
Stock Status:

Out of stock

Back Up Iron Sight for your AR-15, M4, M16A4.
Made by Magpul® Industries.
The new MBUS (Magpul Back-Up Sight) GEN 2 is a low-cost, color injection molded, folding back-up sight.
The dual aperture MBUS Rear Sight is adjustable for windage and fits all MIL-STD-1913 Picatinny rail equipped weapons, but is specifically tailored to the AR15/M16/M4 platform.
Made in the U.S.A.

Color: BLACK

NEW Features for GEN 2
  • Reduced size for greater optics compatibility
  • Both small and large apertures are on the same plane
  • 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 any MIL-STD-1913 Picatinny/STANAG 4694 receiver rail and provides the same height-over-bore as standard A2 irons
  • Protective wings shield the dual flip apertures
  • Detent knob easily and positively adjusts windage


  • MBUS - Rear Gen 2
    • Weight, w/ hardware: 1.3 oz.
    • Height above rail, stowed: ~0.51 in.
    • Length, stowed: 2.6 in.
    • Length, deployed: 1.5 in.

New from the Magpul production line comes the redesigned MBUS, the MBUS Gen2. Compatible with all Milspec 1913 Picatinny rails, this second generation introduces a slimmer profile for better optics compatibility and a lower profile stowing position as well as a positive detent to securely lock the front sight post in place. The rear sight is adjustable for windage and utilizes plane small, large and the NAWS (No Aperature Window Sight) apertures.

Lightweight reinforced polymer construction keeps added ounces to a minimum, while the spring loaded folding design ensures that the MBUS Gen2 will stay out of the way until you need it. This combination of compact durability and one-touch rapid deployment takes any system to the next level. Order your Rear MBUS Gen2 sights today!

***This product contains chemicals/materials known to the State of California to cause cancer and other reproductive harm. To learn more, visit***

28 Reviews

  • 5
    Magpul MBUS Gen 2 REAR Back Up Iron Sight - BLACK

    Awesome sight at a great price, I like the unique flip down battle sight feature this MBUS has.

  • 5
    Lightweight sight

    Easy to use and adjust. Positive clicks and sturdy. Zero issues with it on my BCM upper.

  • 5
    Quality sight

    Had another backup sight on my AR.
    Started falling apart.
    Came to Bravo Company and found a quality sight at a good price.
    Thank you!

  • 4
    Magpul MBUS Gen 2 Rear Back Up iron sight

    Easy mounting, and durable. I have packed the rifle with the sight around in a soft case for a week and no problems. I also like the easy pop up and ease of adjustment.

  • 5
    High Quality!!!!

    Very surprised wit the fit,Quality,construction and simple use. Great Sight for the Money. if you want buy Rifle parts, buy on Bravo Company!!!!!!!!!!!

  • 5
    Good BUIS

    no trouble zeroing, good for the price.

  • 5
    The best

    Fast shipping!

  • 5
    Bravo company is Outstanding

    First off obviously the Magpul MBUS rear sight is quality, Magpul just produces quality products. What impressed me having ordered from Bravo Company for the first time was how quick shipping was. I ordered on a Friday it was at my door Tuesday morning. Not to mention the awesome Bravo Company stickers they send with your order, I mean who doesn't love bad ass stickers. I will for sure be ordering from Bravo Company in the near future.

  • 5
    Great back up.

    Great back up sight and at a affordable price.