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    We Ship Fast!

    Order by 1PM CST for Same Day Shipping (Mon-Fri)

    Returned items, may be scuffed or scratched, packaging may be damaged. Guaranteed functional

    AT3 Tactical Flip Up Backup Iron Sights (BUIS) provide dead-on accuracy, superior durability, and the best value for AR-15 iron sights!

    Available in 2 types:

    Gas Block Sights - for mounting on gas blocks that are lower than the upper receiver (usually about 1/4" lower than the upper receiver rail)

    Same Plane Sights Made for mounting on quad rails or other rails at the same height as the upper receiver

    • A2 style sights - adjustable front sight post height, and dual aperture rear sight with windage adjustment
    • Easy to install and sight in. Reliable and accurate.
    • Also check out our 45 Degree Offset Iron Sights - great for rapid transition between short and long range targets!
    • Material: 6061 aircraft aluminum
    • Finish: Hardcoat Anodized (black)
    • Weight:
      • Gas Block Sights: 3.3oz (Rear) & 3.0oz (Front)
      • Same Plane Sights: 3.3oz (Rear) & 2.6oz (Front)
    • Packaging: PE Bag
    • Mounts to: Picatinny rail
    • Height when flipped down: .75" (front), 1" (rear)

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    Customer Reviews

    Based on 5 reviews
    Practical fit!

    Wish i could give 5 stars. But i purchased these sights on blemish.
    The rear sight can stand up to the recoil of the rifle and will flip down after 2-3 rounds.

    However, front sight is solid.

    Hi Jurell, sorry to hear about the issue with the rear sight. If you can send us an email with your order information to support@at3tactical.com, we'll be glad to set you up with a replacement.
    Can't tell bless are used

    Good fit and finish. Works well.

    What blemish

    Incredible price, blemish was minute. Think I might start shopping the blemished items first...

    We are glad to hear that you are pleased with this blemished product and look forward to helping you with any future orders.
    Great back up sights

    Every thing and even more than I expected. Thanks

    Back up sights

    I had been trying to figure out what I wanted on my 300BLK for a sighting system. So I thought about putting on open sights for the time being. They were blemish sight so I didn't have a lot invested in them. Shipping was fast and customer service was great. Once I had them in my hands the only blemish I could find was some of the paint was peeling being Aluminum I'm not worried about the paint. As for the sights they are basic didn't want a lot invested in them but they went on the rail fine lined up fine and performed great. As for now the only thing I see could be better is the flip up bearing could be tighter they are really easy to lay down. Since they are my primary sights for now I am leaving them up. If I decide to keep open sights I may order an upgrade from AT3. Either way I am happy and will be looking for more stuff from them.