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Troy Rear Sight - Folding - Di-Optic Aperture (DOA) - Optional Tritium Illumination

Troy Rear Sight – Folding – Di-Optic Aperture (DOA) – Optional Tritium Illumination


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We have a 90-day no-hassle return policy. We pay return shipping.

If you need to request a return, contact us at support@at3tactical.com and we will send you a return label

After 90 days, defective items will still be covered under the manufacturer’s warranty, where applicable.

Please refer to the product listing for warranty details. If you have specific warranty questions, contact us at support@at3tactical.com. We may direct you to pursue your warranty claim directly with the manufacturer.

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If you’re dissatisfied with your purchase, in any way, please contact us at support@at3tactical.com – we will do our best to make it right.

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You will receive fast, free shipping for all orders over $50

Shipping cost is $7.99 for orders under $50. We ship with UPS or USPS, depending on the item.

Most orders received by 1pm CST ship the same day

You will receive an email with tracking information at the time of shipment. To expedite shipping, we may ship your order from multiple warehouses. Orders placed on weekends, holidays, or after 1pm will ship the following business day.

Di-Optic Aperture (DOA) Folding Rear Sight with Optional Tritium Illumination

Advanced design, superior sighting and battle-ready toughness define Troy Industries’ Di-Optic Aperture (DOA) Folding Rear BattleSight.

These sights provide lightning fast target acquisition and are manufactured to exceed military specs. The optically engineered apertures center your eyes instantly and effortlessly providing a clearer target picture than with round apertures.

Optionally available with Tritium, a form of hydrogen that emits its own light source, ideal for any low-light shooting situation

The sights feature two settings, one for up to 300 meters and a second for up to 500 meters. This versatility makes the DOA ideal for military, law enforcement and home defense applications. These advanced sights have been extensively field-tested and, like all Troy Industries products, are Battle Ready.

– Faster target acquisition with Di-Optic Aperture
– Increases accuracy to 550m
– Quick install, easy adjust
– 0.460″ profile when folded
– Protected adjustment wheel
– Dual same plane aperture .50 MOA per click
– Aircraft aluminum 6061 & stainless steel
– Type III hard coat finish

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Customer Reviews

Based on 3 reviews
Old Shooters Review

Recently purchased my second set of Troy BUIS with Dioptic Aperture and Tritium.
I’m old enough to have used iron peep sights in my high school days on the rifle team and am very familiar with the accuracy that this style sight is capable of delivering.
The Dioptic rear aperture makes precisely centering the front sight post very easy and the tritium inserts extend the usability of these sights into conditions of failing daylight well beyond those sights without this feature.
Buy once, cry once, own the best.

Worth every penny!

Ordered these with a lil concern about the counterfeit issues going on in the AR15 marketplace. But they came in genuine. And when I went to the range, they were practically zeroed in at 50 yards. That was kinda neat. Very sturdy, very minimal. Easy to acquire di optic on both 100-300 and 300-600. I would highly recommend this product to anyone.


This is an Exellent sight and AT3 Tactical has as good a price as anyone with exceptional service.