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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 2 reviews
    Charles Kingrey C.K. Charles K.
    Great back up sights

    Every thing and even more than I expected. Thanks

    James Phillips J.P. James P.
    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.