AT3™ AT-15 Stripped Lower Receiver – Anodized and 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™ 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 Lower Build Kit - Magpul Stock and Grip, AT3 Lower Parts Kit and Buffer Assembly - Black


AT3 Tactical AR-15 Cerakote Stripped Lower Receiver

The AT-15 is the AT3 Tactical take on the classic AR-15 lower receiver. This lower starts with a solid base of forged 7075-T6 aluminum construction. The same durable, lightweight material used from the beginning of the AR-15’s adoption as the M16 rifle ensures the AT-15 is as tough as they come. Plus, the AT-15 comes in a classic anodized black, and a full range of Cerakote colors that you can match with all your favorite colored parts from AT3 Tactical.

The AT-15 also features a deeper magwell flare than mil-spec lowers, making it easier to reload. This lower receiver serves as the perfect starting point for your next build. Add a lower parts kit of your choice, or piece together something that’s exactly to your specifications. The AT-15 will accept any part compatible with a mil-spec lower receiver. Plus, you can save a little extra cash right away if you add an AT3 AT3 Enhanced Trigger Guard when you buy now!

Want to go for a full receiver set and save even more? Check out our AT-15 receiver set, complete with lower, trigger guard, and upper. Add in a handguard as well with the M-LOK Receiver Set, or the Quad Rail Receiver set. We’re offering standing discounts on each kit, so get what you want and save big.

Durable Construction and Finishes

  • Forged 7075-T6 Aluminum construction for tried-and-true toughness that won’t let you down
  • Cerakote in FDE, ODG, Pink, Red, Burnt Bronze, Tungsten, and Titanium, or a classic black anodized finish resist scratching and wear over time
  • Mil-Spec dimensions ensure compatibility with a huge variety of AR-15 parts and accessories


  • Compatible with all mil-spec AR-15 components and numerous upgrades like triggers, pistol grips, safety selectors, and more
  • Save a little extra on a color-matched AT3 Enhanced Trigger Guard when you add one!
  • 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


  • Platform: AR-15
  • Material: Forged 7075-T6 Aluminum
  • Markings: “Cal Multi”, Pictogram Safety
  • Compatibility: Works with standard AR15 components and magazines
  • Weight: 8.35oz


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.

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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.