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    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.