Troy Industries Rear Folding BattleSight with Di-Optic Apertures - Black

Manufactured by Troy Industries
Manufactured by Troy Industries
14 Reviews

In Stock

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This Rear BattleSight features Troy's unique Di-Optic Aperture, designed to provide lightning quick target acquisition when paired with a traditional M4 style front sight. The first setting of the dual-aperture allows for fast and accurate ranging for up to 300 meters, the second from 300 to 600 meters. The optically engineered aperture centers your eyes instantly and effortlessly providing a clearer sight picture than that of round apertures.

  • Each click adjusts 1/2 MOA
  • 0.460" profile when folded
  • 6061-T6 aircraft aluminum with stainless steel components
  • Quick install
  • Easy to adjust
  • Protected adjustment wheel

The Troy Industries Rear Folding BattleSight is the gold standard for back up iron sights. The folding sight locks securely into the vertical position with a solid stainless steel crossbar, yet folds easily with the push of a button. Its rugged reliability has led this sight to become a favorite for Special Ops and Tactical shooters around the world!
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BrandTroy Industries
Fixed FoldingFolding
Manufacturer.Troy Industries
MaterialAluminum - 6061-T6
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

Ratings & Reviews

14 reviews


Perfect Transaction


Best price I have seen on a Troy Di-optic.

best iron sights on the market


great products great prices fast shipping will order from them again thank you primary arms

1st time shopper


I bought a sight from primary arms and it was the cheapest price I could find anywhere and had an extremely fast ship time with zero hassle. Thank you and look forward to shopping with you again.

rear site


I recently put a eotech red dot and a 3x magnifier on my M4 and didn't hav a rear battle site. I did probly a month research on rear battle sightes and compared prices. I havnt had the chance yet to test the rear sight but it looks cool Hahaha.



My carbine instructor urged me to replace my "plastic" rear backup sight. Glad I chose Troy. Solid built and Di-Optic aperture very easy and quick to acquire. My weapon doesn't sit in a locker at home. It gets used and abused. Glad I have a metal "iron" sight backing me up.

Troy DOA folding rear sight


simply put- Outstanding BUS

These sights are crap!


The peep holes are made with a thinner material around the holes compared to the "Diamondhead" sights. This makes it harder to line up your front sight. When you flip up the 300 yard peep sight you go from bad to worse! I couldn't even use it, it was so bad! I switched to the Diamondhead sights and have been happier for it!

Troy Rear Folding BattleSight (THE Best)


The Troy folding battle sights are one of the best combat ready sights available on the market today.

Excellent sights, excellent service!


These sights are great! This is my second set of Troy Di-Optic sights and even though Troy changed the mounting style somewhat, these sights still mount very solidly with no issues on any of my uppers or front rails. My first set of sights have been on my AR for over 2 years now and they've held a zero even after my AR has been banged around through numerous training classes. These new sights are replacing my plastic MBUS since I'm now running my other HR pretty hard, just don't want to deal with plastic sights anymore. I'll leave the MBUS for my other ARs that are not run as hard.As far as service through Primary Arms, every time I've ordered from Primary Arms, my orders are shipped very quickly and I'm kept in the loop with the status via email. Delivery is very quick and their support staff is excellent when it comes to answering questions about their products.Because of all of this, I'll continue to be a Primary Arms customer as they haven't done me wrong yet.

Good stuff! Fast shipping!!


This is my second troy rear flip up sight. First sight was set up with a drop of lock tight, after a year of constant use and a couple thousand rounds. It had held its zero perfectly! Which is why I went with a second troy. When you first receive the sight its a little rough, the more you open and close the sight the smoother it becomes. Locks up tight and the push button for closure is low profile yet very easy to activate. What most don't tell you about this sight is when its locked up and open there IS a tiny bit of play before it hits its locking mechanism. I'm absolutely sure that's normal, in case you drop your rifle or something directly onto the sight itself. And lastly Primary Arms is probably the best source for your firearm needs! For sure quickest shipping I've ever experienced!!