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    We Ship Fast!

    Order by 1PM CST for Same Day Shipping (Mon-Fri)

    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 Upper and Handguard Kit and All 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.


    • 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
      • 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

    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)

    Have Questions About this Product?

    Ask Us Now

    Customer Reviews

    Based on 5 reviews
    ar-15 combo

    I have assembled several ar-15 rifles and have installed many freefloat handguards and uppers. This one went together without a hitch. The fit was great and it works like it should. Awesome.
    Arrived ahead of time. And packaged better than any i have ever received. Great Job AT3 thank you.

    Thanks for sharing your experience, Jack. We work hard to meet expectations like yours, we're glad we hit the mark for you. Cheers! -AB
    Love AT3 Tactical!

    Really nice match set of upper and hand guard. It was super easy to build, fine quality at a great price! Love how they interlock together. Like all AT3 products, too notch. Love your Red Dots! I have 4.
    Great sale over Black Friday! Thank you! Steve (Hawaii)

    Thanks for sharing your feedback, Steven. We work hard to meet expectations like yours, we're glad we hit the mark for you. Cheers! - AB
    X-mas gift

    The product is good quality. Price is grate. And you ship fast.

    Thanks for spreading a good word for AT3, Kyle. We're glad you're satisfied with your purchase. -AB
    At3 handgaurd and receiver

    Fantastic product shipping was fast, exactly what I looking for in the price range. Very lightweight

    Thanks for sharing your experience, Chris. We work hard to meet expectations like yours, we're glad we hit the mark for you - AB
    Good Stuff!

    Honestly... I love this combo.

    Just when I thought I was the only one who wanted to build a grey rifle.... I find this!

    The finish is excellent and the color (at least the Magpul Stealth Gray) is a perfect match. Seriously, no one else had the color... I either had to settle for sniper gray or get a black set and pay to have it cerakoted.

    I built a 7.62x39 rifle with this set. Installation was easy and the fit with my billet lower was perfect.

    Next build, Im coming here first. Nothing better out there for the price and the shipping was free and got here in less than a week.

    Looking good! Thanks for sharing, Brian. We're glad you're satisfied with your purchase. -AB