Pro Quad Rails – Free Float AR15 Handguards – 4 Lengths Available
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🚚 Shipping Information
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🔄 Returns & Warranty Support
Returns are accepted within 14 days for items that are unused, unopened, and in original packaging with no damage.
A restocking fee applies, but it may be partially waived if store credit is selected instead of a refund to the original payment method.
Custom builds, sale items, and hazardous goods are final sale.
Warranty Coverage: Manufacturer warranties apply to all standard products. Any defects, malfunctions, or performance issues are handled directly by the manufacturer per their terms.
HR Tactical Innovations covers a Fitment & Functionality Guarantee on all custom or modified items — if a verified production error occurs, we’ll replace the item.
View our Refund Policy for full details.
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🌍 International Customers
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Questions? Contact ops@hrtacticalin.com before checkout.
🎖️ GovX Military, First Responder & Teacher Discount
🎖️ GovX Military, First Responder & Teacher Discount
Pro Quad Rails – Free Float AR15 Handguards – 4 Lengths Available
Description
Description
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.
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. .
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
- 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.
- 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.
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
- Proudly made in the USA
- Backed by the AT3 Lifetime Warranty
More Information
Full kit – includes handguard with all mounting hardware, barrel nut, and barrel nut wrench.
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
- Handguard Material: 6061-T6 Aluminum
- Cerakote Finishes
- Flat Dark Earth: H-267 Magpul® Flat Dark Earth
- OD Green: H-232 Magpul® OD Green
- Gray: H-188 Magpul® Stealth Grey
- Pink: H-224 SIG™ Pink
- Burnt Bronze: H-148 Burnt Bronze
- Tungsten: H-237 Tungsten
- Titanium: H-170 Titanium
- 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 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
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Reviews & Questions
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