Magpul MBUS Rear Sight - Black
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
Ratings & Reviews
MagPul MBUS Gen 2 Flip-Up Rear Sight
by Thomas Connolly
Great product (and Service!).Have since bought(and received) both front and rear sights for AR-15 (300 Blackout).
by Luke B
A good low cost backup sight
Awesome Customer Service... GREAT Products!
A HUGE HUGE thank you to mike at 1153 for all of your help. He helped me with anything and everything and made me a lifetime customer. Fast shipping as usually with PA. Thank you again Mike!
by Marion Eschweiler
A nice decent rear sight that wont break the bank.Primary Arms does it again with good pricing and amazing fast shipping. They are the Best.
by Bill Collett
Absolutely great sight, works just like it should. Would expect nothing less from Magpul.
The Real Deal
After having been duped with a knock-off on a certain large online retail site, I was happy to have a better experience with PrimaryArms.
by Andrew Hanson
Always great to work with and your dealer prices make it easy to sell stuff.
by Marcus Stephenson
Another awesome product from Magpul. Low profile when folded, secure when flipped up, and a lighter than the metal piece it replaced. Thanks again to PA for super quick shipping.
MagPul MBUS Gen 2 Rear Sight
by Scubaguy Jack
As for their Front Sight, MagPul is value for money. They look good and work as well as they look.
MagPul MBUS Gen 2 Flip-Up Rear Sight Black
by Richard Campbell
As usual a great product from Mag Pul. It serves the purpose for which I bought it. Have several of them!
MagPul MBUS - Great Item & Great Price x 2!!
Awesome Deal from Primary Arms, so good I had to get a few for all my ARs! Best Deal out there, and the best service period! Super Fast shipping and great communications with the staff at Primary Arms!
by Justin Warshaw
by Lindsey Donges
Awesome. Received everything quickly.
Best price and fast shipping on a solid backup.
by Theodore Wray
Classic choice for a low-cost BUIS that will perform when you need it!Excellent customer service from Primary Arms as always!
MBUS REAR SIGHT
by James Drake
Completely satisfied! Outstanding service!!
awsome back up sights
by tristan greig
Cool sight goes real well with my rifle
by The X man
Decent cheap BUIS, works and I was zeroed with once click, NICE!
by Bobby Haley
Easy installation and Primary Arms shipped this thing way faster than I ever expected.
Just what I was Loki g for.
by Bill Ricks
Easy to install, they look great and the perform even better. I did. It have the problems with the left latch as I have heard other people have had.
MagPul MBUS Gen 2 Flip-Up Rear Sight
by Scott Johnston
easy to raise and latch back in place when not using it
Durable,long lasting sights.
Everyone already knows these are great flip ups but Magpul needs to distribute them for a cheaper price.When you have a bunch of guns that need sets of sights,it can get costly.Primary Arms always seem to have products cheaper than the competition and that is why I shop here.Great customer service and fast shipping.
by CJ Jones
Everything it's supposed to be & shipped super fast. Great outfit you have going there Marshall
One great sight
exactly what was needed, a well made back up sight, low profile on the rail. Would buy again from PA for my next rifle. Great price, fast service. Thanks !!!
MagPul MBUS Gen 2
by Nayel Bikoma