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AT3™ Upper Receiver and SPEAR Handguard Combo

AT3™ Upper Receiver and SPEAR Handguard Combo

$149.99

MSRP: $159.99

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Lifetime WarrantyOn All AT3 Brand Products

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

This includes AT3 Red Dot Sights, Handguards, Iron 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.

Fast & Free Shipping On orders over $50

You will receive fast, free shipping for all orders over $50

Shipping cost is $7.99 for orders under $50. We ship with UPS or USPS, depending on the item.

Most orders received by 1pm CST ship the same day

You will receive an email with tracking information at the time of shipment. To expedite shipping, we may ship your order from multiple warehouses. Orders placed on weekends, holidays, or after 1pm will ship the following business day.

Getting Started on Your Next Build? Go Sleek and Lightweight with our Billet Upper and SPEAR M-LOK Handguard.

The slim free-float design of the SPEAR handguard enhances accuracy while minimizing the weight of your rifle, M-LOK attachment slots and included rail section provide unlimited options for accessorizing your build. Our billet upper matches the contours of the handguard perfectly, for a monolithic look in 3 different finishes.

With 12” or 15” lengths available, the SPEAR handguard is ideal for starting your next AR-15 build, or upgrading an existing firearm. And with our selection of barrels, gas blocks, muzzle devices, bolt carrier groups, and charging handles, you can get the custom upper you need at the right price.

Lightweight & Durable

  • Slim and lightweight M-LOK design, with attachment points at the 3, 6, & 9 o’clock positions and lightened picatinny rail at the 12 o’clock position
  • Durable 6061 aircraft aluminum alloy construction – designed to take a beating
  • Picatinny top rail perfectly aligns with the included billet upper, with matching finish and lines for a monolithic look.
  • Handguard uses screws to clamp around the barrel nut, with anti-rotation tabs and anti-slip screws that ensure a rock-solid lockup

Easy to Install

  • Installs clean and secure with only a few simple steps – all you’ll need is a torque wrench, vise block, and vise. Click here to view our instructions.
  • Seriously, it’s easy. Torque down the barrel nut, slip the handguard over, and tighten down the screws. No need for special plates or adhesives for a rock-solid fit
  • Perfect for assembling a new upper build – be sure to check out our selection of upper receiver components for completing a custom job!
  • Once you’ve got everything installed, you’ll have plenty of room for M-LOK accessories and adapters.

Vented Design - Lightweight and reduces heatM-LOK and Picatinny Rails Hold All Your Accessories

Exceptional Fit and Finish

  • Durable matte-black anodized or Cerakote finishes resist scratches and provide an attractive surface that matches the rest of your build
  • Vented top rail reduces weight and dissipates heat from shooting
  • Finger grooves down the length of the handguard provide a more ergonomic hold and a unique look
  • Fully dehorned and free of burrs and other sharp snag points
  • Proudly made in the USA
  • Backed by the AT3 Lifetime Warranty

Smooth Machining - No Sharp EdgesAT3 SPEAR M-LOK AR 15 Free Float Handguard proudly made in the USA

More Information

Full kit – includes all mounting hardware, plus one M-LOK 5-Slot Rail section and barrel nut wrench.

AT3 Tactical Spear M-LOK Free Float Handguard Flat Dark Earth 15 Inch with Barrel Nut, 5 Slot Rail, and Hardware

Note: most rifle setups will require the use of a low profile gas block that sits under the handguard.

Included in the combo:

Billet upper receiver, handguard with aluminum barrel nut and all mounting hardware, one 5-slot M-LOK to-picatinny rail, hex wrenches for handguard and rail sections, and barrel nut wrench.

Specifications:

  • Rifle Type: AR-15 (If you have a .308 AR variant, check out our AR-10 / .308 page)
  • Material: 6061 Aircraft Aluminum
  • Included Rail Sections: One Aluminum Picatinny Rail Section – 1 3/4” Length, 5 slots
  • Finish: Hard-coat anodized (matte black)
  • Handguard inside diameter: 1 3/8”
  • Barrel nut inside diameter: 1.02” (compatible with barrels up to 1” diameter)
  • Weight
    • 9″ Handguard – 8.3 oz (handguard only) / 9.9 oz (with hardware)
    • 12″ Handguard – 9.3 oz (handguard only) / 10.9oz (handguard hardware)
    • 15″ Handguard – 10.3oz (handguard only) / 11.9oz (handguard hardware)
    • Billet Upper – 7.1oz
  • Actual Handguard Length
    • 9″ – 9.25″
    • 12″ – 12.0″
    • 15″ – 15.0″

Want to see the full kit in action? Check out 704 Tactical’s Review!

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 to assure you stay in the AR-15 barrel nut torque range while timing the barrel nut (30-60 ft lbs)

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Customer Reviews

Based on 21 reviews
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(19)
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R
R.Y.
Mean Green Machine!

Purchased the AT3 upper receiver and Spear handguard combo in OD green to replace the stock DPMS parts. Very impressed with fit & finish. Thanks AT3 Tactical for offering a top notch product! Any plans to offer an AT3 lower?

Z
Z.
Awesome receiver/handguard combo

I can’t believe the top not fit and finish of these parts. I had a good idea of what to expect once I placed my order thanks to a couple of reviews of YouTube, but I was even MORE impressed upon receiving my order.

My one single gripe, I wish the barrel but was steel, simply for longevity’s sake. Perhaps the aluminum barrel nut will last me my lifetime, but I’d prefer a steel barrel nut just because steel is more durable.

It probably won’t matter because the only time I’ll disassemble this top notch upper will be to replace a worn barrel presumably. I’m thoroughly impressed and will be a repeat customer. Thank you, AT3 Tactical.

Thanks for sharing your feedback, Zach. We're glad you're satisfied with your purchase. Cheers!
D
D.J.
well designed

Exceptional design and fit of handguard to upperl; assembled it with Hansen 223 Wylde 10.3" bbl and Superlative Arms adj gas block. Everything fitted well with tight tolerances....expect a bit of break in period, like a new engine, to run smoothly. Added a Toolcraft BCG, charging handle and Magpul BUS....all fitted nice and snug. fits my lower build nicely. Nice and light M-Lok handguard. Still have to add muzzle device, optics, etc. Looking fwd to putting it to the test with various ammo.

Thanks for sharing your feedback, Derek. We're glad you're satisfied with your purchase. Cheers!
C
C.
Smooth lines

This upper and hand guard are seamless and smooth. Can’t wait to put it all together! Should make a sweet precision .22LR

Thanks for sharing your feedback, Carl. We're glad you're satisfied with your purchase. Cheers!
C
C.P.

Looks great the fit is awesome this won’t be the last one I buy

Thanks for sharing your feedback, Cory. We're glad you're satisfied with your purchase. Cheers!