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Midwest Industries MI Rear Sight ERS BUIS

List Price: $105.00
Our Price: $93.95

Stock Status:(Out of Stock)


Back Up Iron Sight for your AR-15, M4, M16A4. Made by Midwest Industries. CNC Machined from billet aluminum and hardcoat anodized. These High Quality back up iron sights feature an A2 aperture, A2 windage knob, and rugged protective ears. Spring loaded ball bearing locks up on an enlarged surface area, allows this back up iron sight to be deployed in one smooth motion, and stay locked up tight. The locking detent button has a stepped down radius to provide easy operation even in muddy or wet conditions. Made in the U.S.A.

  • A2 style dual aperture fully protected from accidental damage.

    Thick rugged pivot ears, twice as thick as the competition.

    A locking detent with double the locking surface, for maximum strength.

    A lock detent button with stepped down turns, to provide a surface you can grab onto, if your hands are muddy or wet.

    Made from 6061 aluminum, and mil-spec hard coat anodizing, to stand up to the most extreme conditions.

    Same style wind age knob as on the standard M-16

Average Customer Review: Average Customer Review: 4.5 of 5 4.5 of 5 Total Reviews: 13 Write a review.

  0 of 0 people found the following review helpful:
5 of 5 Excellent July 24, 2018
Reviewer: Michael Hogg from Nolanville, TX United States  

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  0 of 0 people found the following review helpful:
4 of 5 Nice for the price September 12, 2012
Reviewer: John Bartolome from Front Royal, VA United States  
Placed this Iron sight on my Daniels Defense V5LW. Flips up nice and secure and was pretty much dead on accurate. Had to make a slight adjustment and was zero'd in. This sight would get 5 stars but because it doesn't fold down all the way it gets 4. I may change the site out with the MI SPLP. Only cause it will fold down flat.

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  5 of 6 people found the following review helpful:
1 of 5 Don't trust your life to it. June 5, 2010
Reviewer: JB from san antonio, TX United States  
I wanted a Troy but bought MI because of the price. It fit perfectly under an Eotech 3x magnifier.  All was well until it disintigrated while I was doing rapid fire drill. The pin that holds it all together just rattled loose and then springs, ball bearings, more pins, and parts started flying off in all directions. I managed to find all the parts but decided not to repair or replace it. My reasoning is that the BUIS is there to save you if your optic breaks, and I no longer trusted it. I told the story to the guy at my local tactical shop and he said he'd give me 15% off the price of a Troy if I'd give him the broken MI parts to use to illustrate to people why the high-end stuff is worth the extra money. Lesson learned.

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  1 of 1 people found the following review helpful:
5 of 5 Great Back Up Sight March 10, 2010
Reviewer: Michael W. from Granite City, IL United States  
Bought this item for my Stag Arms AR 15 recentley and installed it easily on my top rail.  It works for a great co witness sight as well.

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  4 of 4 people found the following review helpful:
1 of 5 MI ERS BUIS January 16, 2010
Reviewer: Cliff from Albuquerque, NM United States  
Bought this as a less expensive option, as the Aimpoint is my primary.  Unfortunately it fell apart.  The site fell off the mount as I was doing some bench rest shooting.  Should have gone with the BCM.

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