AT3’s Biggest Anniversary Sale | Shop Now

AT3™ Pro Quad Rails – Free Float AR-15 Handguards – 7, 9, 12, & 15 Inch Lengths

Out of Stock

Enjoy 20% Off this product with AT3’s 12th Anniversary Sale!

Orders will Ship within 1 Business Day
Backed by the AT3 Lifetime Warranty!
TOP ADD-ON'S
Magpul RVG Rail Vertical Grip - MAG412

Magpul RVG Rail Vertical Grip

$23.70
Armorer's Wrench for AR-15 & Multi-Function Tool by AT3™

Armorer’s Wrench for AR-15 Multi-Fuction Tool by AT3

$15.99

The New and Improved Pro Quad Rail – Lightweight, Rigid, and Easier to Install

The quad rail is still the gold standard of secure accessory mounting, but they’re in desperate need of a reboot. That’s what we offer with the AT3 Pro Quad Rail.  It uses the same simple installation as our SPEAR M-LOK handguard, has plenty of lightening for maximum comfort, and it works with Mil-spec uppers, as well as our Billet Upper to match the sleek contours.

AT3 Pro Quad Rail

 

The Pro Series Rail comes in 7″, 9″, 12.5″, and 15″ inch lengths, making it ideal for upgrading existing guns or starting fresh with specialized AR15 builds. If you’re planning a build without a Front Sight Base, make sure you pick up a Low Profile Gas Block with the handguard.

Solid and Secure Mounting

  • This rail is lightened down all four sides of Picatinny Rail, making it lightweight while still remaining solid for all your favorite accessories
  • 5 Integrated non-rotating QD Sockets for a variety of sling configurations
  • Durable 6061 aircraft aluminum alloy construction – designed to take a beating
  • Picatinny top rail perfectly aligns with AR-15 flat-top upper receivers, both forged and our AT3 Billet Upper
  • Handguard uses screws to clamp around the barrel nut, with anti-rotation tabs and anti-slip screws that ensure a rock-solid lockup

Simple Installation

  • Installs easily, just like our SPEAR M-LOK rail – you’ll only need a few simple tools to get the rail installed. Click here to view our instructions.
  • Perfect for assembling a new build or upgrading an existing rifle – it’s compatible with most mil-spec upper receivers on the market
  • Once you’ve got it installed, you’ll have plenty of room for any Picatinny rail accessories like lights, foregrips, lasers, or bipods
  • Seriously, it’s easy. Check out our video below for a guide on the complete installation.

AT3 Quad Rails are Compatible with the AT3 Billet Upper and Standard Forged Uppers

Exceptional Fit and Finish

  • Durable matte-black anodized finish resists scratches and provides an attractive surface that matches the rest of your build
  • Vented rails on all 4 sides reduce weight and help dissipate heat from shooting
  • Scalloped rails and clean lines for a unique look that flows into the AT3 Billet Upper
  • Proudly made in the USA
  • Backed by the AT3 Lifetime Warranty

Torture Test by FocusTripp!

More Information

Full kit – includes handguard with all mounting hardware, barrel nut, and barrel nut wrench.

AT3 Pro Quad Rail

If You’re Keeping Your Front Sight Base:

The Pro Quad Rail will work with your build! Use the appropriate length rail for your gas system:

  • Carbine Length – 7″ Pro Quad Rail
  • Midlength – 9″ Pro Quad Rail
  • Rifle Length – 12.5″ Pro Quad Rail

Included in the box:

    • AT3 Pro Handguard
    • 7075 T6 Aluminum Barrel Nut
    • Mounting Hardware with Allen Wrenches
  • Barrel Nut Wrench

Specifications

  • Rifle Type: AR-15 (If you have a .308 AR variant, check out our AR-10 / .308 page)
  • Handguard Material: 6061-T6 Aluminum
  • Cerakote Finishes
    • Flat Dark Earth: H-267 Cerakote Magpul® Flat Dark Earth
    • OD Green: H-232 Cerakote Magpul® OD Green
    • Gray: H-188 Cerakote Magpul® Stealth Grey
    • Pink: H-224 Cerakote SIG™ Pink
    • Burnt Bronze: H-148 Cerakote Burnt Bronze
    • Tungsten: H-237 Cerakote Tungsten
    • Titanium: H-170 Cerakote Titanium
    • Red: H-167 USMC Red
  • Handguard inside diameter: 1.35”
  • Barrel Nut Material: 7075-T6 Aluminum
  • Barrel nut inside diameter: 1.02” (compatible with barrels up to 1” diameter)

Weight

  • 7″ Handguard – 9 oz
  • 9″ Handguard – 12 oz
  • 12″ Handguard – 15 oz
  • 15″ Handguard – 1 lbs 2oz

Actual Handguard Length

  • 7″ – 7″
  • 9″ – 9″
  • 12.5″ – 12.5″
  • 15″ – 15.0″

Frequently Asked Questions:

Will this fit my AR-15?

The Pro Quad Rail, like the SPEAR,  is designed for use with our matching Billet Upper Receiver as well as the majority of mil-spec AR-15 uppers on the market. It

This product will not work with non-milspec upper receivers like the Bushmaster Carbon due to the non-standard barrel threads, and it is not compatible with most piston kits as they won’t fit under the handguard. Additionally, this rail will not work with gas blocks that are irregularly shaped or exceed 1.3 inches in height or width.

We’re always glad to verify the fit for your rifle, just contact us! And if it doesn’t fit, we are glad to return it for you. And if you’re new to AR-15, we recommend watching a couple of the videos on our installation video page to understand how the process works.

What tools and additional parts are required?

For parts – most setups will require a low profile gas block.

For tools – we recommend:

  • A vise and non-marring vise block for holding the upper
  • A torque wrench and breaker bar to assure you stay in the AR-15 barrel nut torque range while timing the barrel nut (30-60 ft lbs)
  • Blue loctite for the mounting screws

Products available on this page:

The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.

AT3 Lifetime Warranty Logo

All AT3 Tactical Brand Products carry a lifetime warranty against manufacturer’s defects.

This includes AT3 Red Dot SightsHandguardsIron Sights, and any other product that carries the “AT3 Tactical” or “AT3™” name. For other brands (ex. Magpul or Troy), please refer to the manufacturer’s warranty policy.

In the event that your AT3™ product becomes unusable, we will repair or replace the product at no charge to you.

If we cannot repair your product, we will replace it with a product in perfect working order of equal or better physical condition. The warranty is fully transferable, but we may require information about the original purchase to validate the authenticity of the product.

If your product is in need of warranty service, please contact AT3 Tactical to start the process

Our contact info is available here. To expedite processing, please provide your order information and description of the defect.

Please note: The AT3 Lifetime Warranty does not cover loss, theft, intentional damage or cosmetic damage that doesn’t affect the performance of the product.

Customer Reviews

Based on 284 reviews
89%
(252)
7%
(20)
2%
(6)
1%
(3)
1%
(3)
S
Sam
Good fit for a carbine build

Fit great and the finished are an exact match to the genuine Magpul colors

Hi there! Thank you for your review. We're so glad to hear that our AT3™ Pro Quad Rails were a good fit for your carbine build and that you were happy with the finish. We strive to provide high-quality products that match genuine Magpul colors. Happy shooting!

J
Jonathan Welliver
Great Rail

Looks great and is built tough. AT3 makes awesome stuff.

Thank you for the positive feedback! We're glad to hear that you're enjoying your AT3 Pro Quad Rail. We take pride in creating durable and stylish products. Thank you for choosing AT3!

A
Andrew Gunter
👍

Easy install and the rails have fit every attachment I’ve put on so far.

Thank you for your review! We are glad to hear that our AT3 Pro Quad Rails were easy to install and have accommodated all of your attachments. We appreciate your feedback and hope you continue to enjoy our product. Happy shooting!

J
Jacob Clark
Great quality product at a fantastic price.

I am very impressed with AT3 tactical. The quality of the hand guard is fantastic and they shipped it very quickly. I will be recommending them to everyone who is interested in building an AR!

Thanks for sharing your feedback! We're glad you are satisfied with your purchase!

A
Adam Benavidez
Great quality

I recieved the rail faster than expected and it mated up to my upper really nice I’d definitely would buy another or another AT3 rail!

Customers who viewed this item also viewed these products

AT3 Tactical Billet Upper and Pro Quad Rail AR-15 Handguard Combo with Cerakote Finishes

AT3™ AR-15 Upper Receiver and Pro Quad Rail Handguard Combo

$174.99$139.99
Upgrade or Start Your Next Build with our Newest Billet Upper and Pro Quad
AT3 Spear M-LOK Handguard with Cerakote Finishes - 7 Colors

AT3™ SPEAR M-LOK Handguard for AR-15 – 9, 12, &...

$99.99$79.99
The AT3 SPEAR™ is our best, most secure handguard. Simple to install, lightweight, and
Midwest Industries Combat T-Series Free Float Quad Rail for AR-15 - AT3 Tactical

Midwest Industries Combat T-Series Free Float Quad Rail for AR-15...

T-Series Quad Rail Handguard by Midwest Industries The T-Series quad rail is simple: if

BCM QRF Quad Rail Free Float AR-15 Handguard - 5...

$171.95
Superb Quality with Industry-Leading Barrel Nut & Lock-up Design The BCM QRF (Quad Rail

AT3™ Forged AR-15 Upper Receiver and Pro Quad Rail Combo

$149.99$119.99
AT3 Forged Upper with Lightweight Quad Rail Combo If you’re looking to update your
MI 12.5" AR-15 Gen2 Two Piece Free Float Quad Rail Handguard with Carbine Front Sight Cutout

MI 12.5" AR-15 Gen2 Two Piece Free Float Quad Rail...

$215.95
Extended Free Float Rail for AR-15 with Front Sight Base 12.5″ AR-15 Gen2 Two
UTG Handguard: UTG Pro Super Slim Free Float

UTG PRO Super Slim Free Float AR-15 Handguard

Top of the Line – Super Lightweight Handguard Perfectly Designed for your AR Here
UTG Pro Arwen M-LOK Free Float Handguard

UTG Pro Arwen M-LOK Free Float AR-15 Handguard

$74.97
A Durable & Lightweight Handguard Ergonomically Designed For Left & Right Hand Shooters The
UTG Pro AR-15 M-LOK Free Float Handguard - Super Slim

UTG Pro AR-15 M-LOK Free Float Handguard - Super Slim

Super Lightweight Handguard with a Grooved Surface for a Solid yet Comfortable Grip for
AT3™ SPEAR XL AR-15 M-LOK Suppressor Ready Handguard

AT3™ SPEAR XL AR-15 M-LOK Suppressor Ready Handguard - 12...

$159.99$127.99
The AT3™ SPEAR XL M-LOK Handguard is Suppressor Ready, Light Weight, and Easy to
Daniel Defense Omega Rail - Quad Rail Picatinny Free Float Handguard

Daniel Defense Omega Rail - Quad Rail Picatinny Free Float...

$226.00
Lightweight & Easy To Install Rock-Solid Quadrail For Carbine Length Rifles The Daniel Defense
Timber Creek Outdoors Enforcer AR-15 Handguard - 15 Inch - Black

Timber Creek Enforcer 15" AR-15 Free Float M-LOK Handguard

(no reviews yet)
$207.99
Timber Creek Enforcer 15″ AR15 Free Float M-LOK Handguard The Timber Creek Outdoors Enforcer
AT3 AR-15 Billet Upper and M-LOK Handguard with Cerakote Finishes - 7 Colors

AT3™ AR-15 Upper Receiver and SPEAR Handguard Combo

$169.99$135.99
Getting Started on Your Next Build? Go Sleek and Lightweight with our Billet Upper

AT3 SPEAR Furniture Kit - AT3 AR-15 M-LOK Handguard, Magpul...

$150.99$120.79
Accurize and customize your AR with an AT3 Free-Float Rail and matching Magpul furniture!
MI AR-15 Gen2 Two Piece Drop-In Quad Rail Handguard

MI AR-15 Gen2 Two Piece Drop-In Quad Rail Handguard

No Gunsmith Drop-in Installation – Installs Like Factory Plastic Hand Guards Made from 6061

Frequently purchased together

AT3™ AR 15 Gas Tube & Carbine Gas Tube Length

AT3™ AR-15 Gas Tube - Carbine, Mid, Rifle, & Pistol...

$13.99$11.19
Quality, USA made stainless steel gas tubes with roll pins for AR rifles Note:
AT3™ Low Profile Steel Gas Block + Gas Tube + Roll Pin Combo

AT3™ Low Profile Steel AR-15 Gas Block + Gas Tube...

$35.99$28.79
Buy As A Set And Save! This combo includes your choice of 4 different
AT3 Tactical Gas Tube Roll Pins

AT3™ AR-15 Gas Tube Roll Pins - Set of 2

$0.99$0.79
AT3™ AR-15 Gas Tube Roll Pins – Set of Two All AT3 Tactical upper
Magpul AFG2 for AR-15 (MAG414) - Angled Fore Grip

Magpul AFG2 for AR-15 (MAG414) - Angled Fore Grip

$34.49
Slimmer And Shorter Fore Grip Compatible With Rail Covers The Magpul AFG2 Angled Fore
Armorer's Wrench for AR-15 & Multi-Function Tool by AT3™

Armorer's Wrench for AR-15 Multi-Function Tool by AT3™

$19.99$15.99
This perfect tool for AR builds that allows installation & removal of barrel nuts,
Ballistic Advantage 300 BLK 8.3 Inch Barrel - Hanson Profile with Lo Pro Gas Block - Nitride - AT3 Tactical

Ballistic Advantage 300 BLK 8.3 Inch Barrel - Hanson Profile...

(no reviews yet)
$199.50
Short .300 Blackout Barrel – Perfect for Suppressed AR Pistols This barrel features a

AT3™ 3x Magnified Red Dot Kit - Includes Red Dot,...

$179.99
This kit combines the AT3 RD-50 PRO Red Dot Sight with .83″ PRO-MOUNT Riser,

Radian Raptor-LT Ambidextrous AR-15 Charging Handle

$74.95
Radian Raptor LT with Polymer Levers The Raptor-LT charging handle utilizes the same patented
FAB Defense Mag-Well - AR-15 Magazine Well Grip & Funnel

FAB Defense Mag-Well - AR-15 Magazine Well Grip & Funnel

$22.00
Transform Your Magazine Well Into A Close Ergonomic Foregrip The FAB Defense MWG Mag-Well
Strike Industries King Comp for .223/5.56 Rifles - 1/2x28 - AT3 Tactical

Strike Industries AR-15 King Comp for .223/5.56 Rifles - 1/2x28

$45.95
The Perfect Hybrid of Compensator, Flash Hider, & Muzzle Brake For Your AR-15 The
Strike Industries Oppressor Blast Shield - for JCOMP

Strike Industries AR-15 Oppressor Blast Shield - for JCOMP, King...

$114.95
Next Evolution In Concussion Reduction for the AR-15 The Strike Industries Oppressor Blast Shield
UTG Ergonomic Ambidextrous Vertical Foregrip

UTG Ergonomic Ambidextrous Vertical Foregrip

$12.97
Comfortable Way to Improve Weapon Control And Accuracy The UTG Ergonomic Ambidextrous Vertical Foregrip

Breek Arms WARHAMMER Mod 2 Ambidextrous AR-15 Charging Handle

$44.99
Ultra-Slick, Ultra-Affordable Ambidextrous AR15 Charging Handle If you’re looking for a charging handle upgrade
AT3 Tactical Crush Washer - 1/2 Inch for 5.56/.223

AT3™ 1/2 Inch Crush Washer for .223/5.56 Muzzle Devices Compatible...

$1.99$1.59
Time Your Muzzle Device with a Black Nitride Crush Washer from AT3 Crush washers

Breek Arms Micro Warhammer AR-15 Charging Handle

$44.99
Snag Free Ambidextrous Charging Handle – Breek Micro Warhammer The Breek Arms Warhammer is

Questions & Answers

Don't see the answer
you're looking for?

Loading questions...