AT3™ Forged Upper Receiver and SPEAR Handguard Combo

AT3 M-LOK Handguard with Forged AR Upper Combo

Build your rifle the way you want, and save some money by bundling a forged upper with a lightweight M-LOK handguard! This setup is perfect for building out a custom upper, and dropping it onto a milspec lower receiver. With a few simple tools, this AR upper combo kit comes together to make an exceptional package that’s light on cost.

When you buy this kit, you get a stripped forged upper receiver, a lightweight M-LOK handguard, plus an upper receiver parts kit for finishing the dust cover and forward assist. We also offer this kit in a variety of Cerakote colors, so you can really make your rifle your own, with the option to color match on Magpul FDE and OD Green shades.

With 9″, 12”, and 15” lengths rail lengths available, this combo is ideal for starting your next AR upper build. 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
• 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

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

What’s in the box?

• AT3 Forged Upper Receiver
• AT3 SPEAR M-LOK Handguard (Includes all hardware and barrel nut wrench)
• 5-Slot M-LOK Rail Section
• AT3 Upper Parts Kit (Forward Assist and Dust Cover Assemblies)

Specifications

• Rifle Type: AR-15 (If you have a .308 AR variant, check out our AR-10 / .308 page)
• Receiver Material: 7075-T6 Aluminum
• Handguard Material: 6061-T6 Aluminum
• Finish
  • Black: Type 3 Hardcoat Anodized
  • 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)
• Included Rail Sections: One Aluminum Picatinny Rail Section – 1 3/4” Length, 5 slots
• Weight
  • 9″ Handguard – 9.9 oz
  • 12″ Handguard – 10.9oz
  • 15″ Handguard – 11.9oz
  • Billet Upper – 7.1oz
• Actual Handguard Length
  • 9″ – 9.25″
  • 12″ – 12.0″
  • 15″ – 15.0″

What tools and additional parts are required?

For parts – most setups will require a low profile gas block to sit under the handguard – most barrels will work with the handguard.

For tools – we recommend:

• A vise and non-marring vise block for holding the upper
• Roll pin punch and non-marring hammer for driving in the forward assist pin
• 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