AT3™ AT-15 Lower and Upper Receiver Set – Anodized and Cerakote

Click Here for Price
Out of Stock

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.

Orders will Ship within 1 Business Day
AT3™ Pro-Builder™ AR-15 Lower Parts Kit - No Grip or Trigger Assembly

AT3™ Pro-Builder™ AR-15 Lower Parts Kit - No Grip or Trigger Assembly


AT3™ AR-15 Bolt Carrier Group -  5.56 NATO/.300 Blackout - Black Nitride

AT3™ AR-15 Bolt Carrier Group - 5.56 NATO/.300 Blackout - Black Nitride


AT3 Tactical AR-15 Stripped Cerakote Upper and Lower Set

The AT-15 Receiver Set includes a stripped lower and upper, in 6 Cerakote shades plus classic anodized black. This kit forms the foundation of your new favorite AR-15 build, with tons of color options to choose from, and open enough to customize with handguards, triggers, barrels, and everything else that makes a gun go bang. Plus, with AT3’s extensive Cerakote AR parts selection, you can get that custom look you’ve always wanted.

Since this is a big bundle, we knock 5% off the total price of every part, so you’re saving money right off the bat. Plus, this set has some ergonomic improvements to set it apart from the ground. The lower receiver features a deep magwell flare, making reloads easier and faster to pull off. The included trigger guard also has a deep scoop, so you’re covered for any shoot where you need to have gloves.

Want to go for a full receiver set and save even more? Add in a handguard for your builder kit with the M-LOK Receiver Set, or the Quad Rail Receiver set. Or, if you want just a lower, a stripped AT-15 is always right there. Be sure to check out all the parts you’ll need to finish your rifle, including 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.

Durable Construction and Finishes

  • AT-15 lower is forged 7075-T6 Aluminum construction for tried-and-true toughness that won’t let you down
  • Cerakote in FDE, ODG, Pink, Burnt Bronze, Tungsten, and Titanium, or a classic black anodized finish resist scratching and wear over time
  • Upper, Lower, and Trigger Guard all feature the same color for a consistent look on your fresh build

Customizable with Cerakote

  • Pair this receiver set with the handguard of your choice – including special materials like carbon fiber!
  • 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 – we use the same Cerakote colors for all finishes we offer on all AR parts

Available Finishes

  • Black: Type 3 Hardcoat Anodized
  • Flat Dark Earth: H-267 Magpul® Flat Dark Earth
  • OD Green: H-232 Magpul® OD Green
  • Pink: H-224 SIG™ Pink
  • Burnt Bronze: H-148 Burnt Bronze
  • Tungsten: H-237 Tungsten
  • Titanium: H-170 Titanium
  • Red: H-167 USMC Red – Coming Soon!

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
  • Trigger Guard
    • Material: 6061-T6 Aluminum


Is this lower Mil-Spec?

The AT-15 uses 7075-T6 aluminum construction, and is availbale 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.

Products available on this page:

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.