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    We Ship Fast!

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

    Gear up with AT3 Tactical Pro Series Handguards, with 5 different lengths to suit your next build.


    Free float design enhances accuracy by keeping stress off the barrel.

    Rock-solid 6061 Aircraft Aluminum handguard that withstands the toughest conditions.

    Rail height perfectly matches an AR-15 flat-top upper receiver - your optics, iron sights, and other accessories will line up perfectly.

    Unique low-profile design taller than it is wide (see pictures for exact dimensions). This makes our rail extremely light and easy to grip.

    Backed by the Lifetime AT3 Warranty.

    AR 15 Handguard - AT3 Float Quad Rail in Hand



    Precision milled MIL-STD-1913 (picatinny) rails on all 4 rails. None of the sharp edges that you will find on inferior rails.

    Vent holes that run alongside the gas tube keep the rail cool, even after a long day at the range.

    Hardcoat anodization provides a durable surface that resists scratches and matches your existing parts.  For our those with Magpul Flat Dark Earth Cerakote, the finish is even more durable.

    AR 15 Handguard - AT3 Detailed CNC Machine Work



    The Pro-Series Quad Rails are some of AT3 Tactical's most popular products 5-star reviewed, top-tier AR-15 quad rails at great prices.

    Full kit includes all mounting hardware as pictured below. Installation is simple, just replace your current barrel nut with the nut we provide.

    AR 15 Handguard - AT3 Free Float Quad Rail Parts Grande



    • Universal fits all Mil-Spec AR-15 upper receivers
    • One-piece construction rock-solid fit!
    • Please Note: These quad rails are made for standard AR-15's. If you have a 7.62/.308 AR variant, check out our AR-10 / 7.62 / .308 page.
    • Material: 6061 Aircraft Aluminum
    • Finish: Hard-coat anodized (black) or Magpul Flat Dark Earth Cerakote
    • Length: 7", 9", 12.5", 14.5", 15.75"
    • Inside Diameter: See pictures
    • Weight: 7" - 8.5oz, 9" - 10.1oz, 12.5" - 15.7oz, 14.5" - 16oz, 15.75" - 18oz
    • Packaging: PE Bag
    **PLEASE NOTE THIS RAIL DOES NOT WORK WITH QUAD RAIL END CAPS! (Then again it doesn't need an end cap!)


    Q: How do I know if this will fit my AR-15?
    A: This will fit any AR-15 that has a standard mil spec upper receiver. It will require some modification to your firearm though, including replacing the barrel nut, removing the flash hider, and possibly adding a low profile gas block. Want to learn more? Watch the installation videos.

    Q: Do I need to buy anything else?
    A: For longer handguards you may need to replace the gas block or front sight with a low profile gas block, available here. These gas blocks are low enough to sit under the quad rail. You will also need to get an armorer's wrench for the barrel nut, and we highly recommend a vise block to hold the upper receiver in place while you work on the weapon. Get armorer's tools here.

    Q: Will this work with my AR-10/.308?
    A: No - these quad rails are made for standard AR-15's. If you have a 7.62/.308 AR variant, check out our AR-10 / 7.62 / .308 page.

    Have Questions About this Product?

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    Customer Reviews

    Based on 13 reviews
    AT3 Quad Rail and BUIS

    Awesome products guys!! Looks great on my rifle!! Better than expected!! I will definitely be a repeat customer. All I need now is the RD50!!

    Daniel, thank you for the great review! We’re so happy you loved the product and can’t wait to have you back. – AB
    AR handguard

    This was a perfect fit for my AR upper build with a 24” heavy barrel, the price was right and the fit and finish were perfect. I’ll probably by more for my future builds.

    That looks great, Richard! We’re so happy you liked the product. We count ourselves lucky for customers like you. Cheers! - AB
    Great Handrail!

    This handrail was purchased for my budget build and I could not be happier. I went with the extra long 15.75" for my mid-length gas system and barrel. It fits great over AT3's low profile gas block and tube, and it looks super sharp if I do say so myself. If you are building on a budget or getting your parts in installments like I did, do yourself a favor and pick up one of these bad boys. Super fast shipping and exactly as advertised. You rock, AT3!

    Wow, looks really great! We try our best to provide products that are cheap in price, but not in quality. We appreciate your feedback, Brian! -- LM
    Pro series 15 quad rail

    Not bad for the price. Already recommended friends.

    Thanks for spreading a good word for AT3, Antonio! We work hard to meet expectations like yours, and we’re happy to hear we hit the mark for you. Cheers!
    Amazing product

    I picked up the at3 15.75 hand guard and I am blow away with it color and fitment. I have the del-ton fde edition and it looks like I pick it up from the manufacturer with this hand guard on it. Shipping was so fast!!!

    Thank you for the feedback and for doing business with us, Dwight! Glad to know you are pleased with your new hand guard. --LM