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    The AT3 Tactical 14.5" Free Float Quad Rail provides an unfailing grip and plenty of room for accessories.


    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.



    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.




    The Pro-Series Quad Rails are 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.


    • Made in Minnesota, USA
    • Please Note: These quad rails are made for standard AR-15's. If you have a 7.62/.308 AR variant, check our our AR-10 / 7.62 / .308 page.
    • Material: 6061 Aircraft Aluminum
    • Finish: Hard-coat anodized (black)
    • Length: 14.5"
    • Inside Diameter: See pictures
    • Weight: 16oz
    • 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 our our AR-10 / 7.62 / .308 page.

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    Customer Reviews

    Based on 40 reviews
    Frank Sucharsky F.S. Frank S.
    Pro Series full float quad rail.

    Great product, perfect fit. Just as it was described. And it arrived the day that said it would. I am very impressed with my me quad rail and AT3.

    Timothy Cataldi T.C. Timothy C.

    Very easy to install looks great and works great only put 100 rounds thru after install but no problems with it recieved in 3 days from ordering

    Mack Schmalzried M.S. Mack S.
    14.5" free float quad pro series

    Speedy shipping, easy install, feels great, looks great, priced great. I could not be happier with this product. AT3 tactical, I will be back.

    Steve Coffman S.C. Steve C.
    Great rail

    Fulfilled order quickly and looks great! This is my first build and will definitely be back for more business. Love the look!

    Justin Iosco J.I. Justin I.
    Solid Free Float Quad Rail

    Pretty solid free float handguard. Took a few adjustments to get top rail lined up with upper receiver but with a couple tweaks got rail, gas tube as well as barrel nut dialed in to fit perfectly. Great rail!