AT3™ AT-15 M-LOK Receiver Set – Bright White Cerakote


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This item is regulated, therefore your entire order will be shipped to an FFL dealer of your choosing. After you place your order, we will contact you to finalize these details.

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AT3™ AR-15 Bolt Carrier Group - 5.56 NATO/.300 Blackout - Nickel Boron


AT3™ 2-Stage AR 15 Lower Parts Kit with Nickel Boron Trigger


AT3 Tactical White M-LOK Receiver Set – Limited Edition!

Start a new Bright White AR-15 build with this limited run from AT3 Tactical! This AT-15 M-LOK Receiver set includes an AT-15 Lower with Enhanced Trigger Guard, Billet Upper, and 15 Inch SPEAR M-LOK Handguard, all finished in Bright White H-140 Cerakote.

Since this is a big bundle, we knock 10% off the total price of every part, so you’re saving money right off the bat. Plus, this set is packed with features to improve performance and customization. The SPEAR M-LOK handguard comes with a 5-slot rail adapter and tons of M-LOK slots, with a 7075-T6 aluminum barrel nut for tough, lightweight performance. The lower receiver also has a deep magwell flare, making reloads easier and faster to pull off.

To get your rifle together, start with a lower parts kit, a buffer kit, a barrel of your choice, bolt carrier group, and charging handle. And as always, the pistol grip and stock that fits you best. If you’re looking for our standard colors, we have the same M-LOK Receiver Set with more options for handguard length.

Durable Construction and Finish

  • Forged 7075-T6 Aluminum construction in the lower for tried-and-true toughness that won’t let you down
  • Cerakote in H140 – Bright White for a stunning, unique look that resists wear and stands out in a crowd of black rifles
  • Rigid 7075-T6 aluminum barrel nut provides the support your handguard needs for maintaining zero

Customizable with Cerakote

  • Compatible with all mil-spec AR-15 components and numerous upgrades like triggers, pistol grips, safety selectors, and more
  • Color coordinate your builds with AT3 parts – or mix and match for a unique look!
  • Attach accessories using the M-LOK system at 3, 6, and 9 o’clock position, plus a full length picatinny top rail!

What’s Included


  • Lower Receiver
    • Platform: AR-15
    • Material: Forged 7075-T6 Aluminum
    • Markings: “Cal Multi”, Pictogram Safety
    • Compatibility: Works with standard AR15 components and magazines
    • Weight: 8.35oz
  • Upper Receiver
    • Material: 6061-T6 billet aluminum
    • Weight: 7.1 oz
    • Feedramps: M4 Feedramps
  • Handguard
    • Handguard Material: 6061-T6 Aluminum
    • 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
      • 15″ Handguard – 11.9 oz
  • Trigger Guard
    • Material: 6061-T6 Aluminum


Is this lower Mil-Spec?

The AT-15 uses 7075-T6 aluminum construction, and is available in a type 3 hardcoat anodized finish, which are mil-spec. The AT-15 also accepts all mil-spec AR-15 components. Most triggers, pistol grips, lower parts, buffer tubes, and upper receivers will have no issue fitting into this receiver. With the Cerakote options, the thickness of finish in some areas may make the fit a bit tighter.

What is Cerakote?

Cerakote is a ceramic paint and adheres to polymer and metal very well. Since the the lowers are painted, some wear marks may be seen on areas of heavy use. AT3 doesn’t warranty against Cerakote inconsistencies or the wearing of coatings. Our parts are Cerakoted using the official Cerakote colors.



Have Questions About this Product?

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 1 review
Richard Hair
FIve Star Rating?

The quality of this upper, lower and rail are exceptional, the white cerakote looks to be very good, AT3 has always delivered in a timely fashion, even though I give the product five stars, I do have a complaint, the contact points, ie. take down pin holes, pivot point, charging handle and bolt carrier tracks should not be cerakoted. These areas all have to be cleaned up before firearm will function.