0 Cart
Added to Cart
    You have items in your cart
    You have 1 item in your cart
    View Cart / Checkout Continue Shopping

    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.

    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?

    Ask Us Now

    Customer Reviews

    No reviews yet