AT3™ AT-15 M-LOK Builder Set - 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.
6 Magazines Per Order: Due to extreme volume, we are limiting sales of magazines to 6 per customer order. This applies to individual and bundled magazines. AT3 reserves the right to cancel any order over the 6 magazine limit.
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Product description
AT3 Tactical AR-15 M-LOK Builder Set
Get your custom Cerakote AR build started with the sleek AT3 Tactical M-LOK Builder set. This kit includes the new AT-15 Lower Receiver with Enhanced Trigger Guard, Billet Upper Receiver, and SPEAR M-LOK handguard, all with matching color finishes. Choose the color that works best for you, whether classic black or 7 Cerakote shades, plus the length of your handguard, and get started on your next big project.
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 an even more robust, quad rail handguard, check out the AT-15 Quad Rail Builder Set. If you’re looking for more specific building needs, you can always choose a Stripped AT-15 Lower, or AT-15 Lower and Upper Set.
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
- Rigid 7075-T6 aluminum barrel nut provides the support your handguard needs for maintaining zero
- Limited edition finishes! White and Gold Cerakote are now available!
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 – we use the same Cerakote colors for all finishes we offer on all AR parts
- Attach accessories using the M-LOK system at 3, 6, and 9 o’clock position, plus a full length picatinny top rail!
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
- Gold: H-122 Gold – Limited edition!
What’s Included
- AT3 AT-15 Stripped Lower Receiver
- AT3 Slick Side Upper Receiver
- Includes Black Dust Cover
- AT3 SPEAR M-LOK Handguard
- 5 Slot M-LOK Rail Section
- Barrel Nut
- Barrel Nut Wrench
- AT3 Enhanced Trigger Guard
Specifications
- 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
- 9″ Handguard – 9.9 oz
- 12″ Handguard – 10.9 oz
- 15″ Handguard – 11.9 oz
- Trigger Guard
- Material: 6061-T6 Aluminum
FAQ
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.
All 25 options on this page
- AT3™ AT-15 M-LOK Builder Set - Anodized and Cerakote - Color: Gold, Length: 15 Inch | SKU: AT3-AT15-MLOK-BUILD-SET-15-AU
- AT3™ AT-15 M-LOK Builder Set - Anodized and Cerakote - Color: Black, Length: 9 Inch | SKU: AT3-AT15-MLOK-BUILD-SET-9-BLK
- AT3™ AT-15 M-LOK Builder Set - Anodized and Cerakote - Color: Flat Dark Earth, Length: 9 Inch | SKU: AT3-AT15-MLOK-BUILD-SET-9-FDE
- AT3™ AT-15 M-LOK Builder Set - Anodized and Cerakote - Color: OD Green, Length: 9 Inch | SKU: AT3-AT15-MLOK-BUILD-SET-9-ODG
- AT3™ AT-15 M-LOK Builder Set - Anodized and Cerakote - Color: Pink, Length: 9 Inch | SKU: AT3-AT15-MLOK-BUILD-SET-9-PNK
- AT3™ AT-15 M-LOK Builder Set - Anodized and Cerakote - Color: Burnt Bronze, Length: 9 Inch | SKU: AT3-AT15-MLOK-BUILD-SET-9-BB
- AT3™ AT-15 M-LOK Builder Set - Anodized and Cerakote - Color: Tungsten, Length: 9 Inch | SKU: AT3-AT15-MLOK-BUILD-SET-9-TG
- AT3™ AT-15 M-LOK Builder Set - Anodized and Cerakote - Color: Titanium, Length: 9 Inch | SKU: AT3-AT15-MLOK-BUILD-SET-9-TI
- AT3™ AT-15 M-LOK Builder Set - Anodized and Cerakote - Color: Black, Length: 12 Inch | SKU: AT3-AT15-MLOK-BUILD-SET-12-BLK
- AT3™ AT-15 M-LOK Builder Set - Anodized and Cerakote - Color: Flat Dark Earth, Length: 12 Inch | SKU: AT3-AT15-MLOK-BUILD-SET-12-FDE
- AT3™ AT-15 M-LOK Builder Set - Anodized and Cerakote - Color: OD Green, Length: 12 Inch | SKU: AT3-AT15-MLOK-BUILD-SET-12-ODG
- AT3™ AT-15 M-LOK Builder Set - Anodized and Cerakote - Color: Pink, Length: 12 Inch | SKU: AT3-AT15-MLOK-BUILD-SET-12-PNK
- AT3™ AT-15 M-LOK Builder Set - Anodized and Cerakote - Color: Burnt Bronze, Length: 12 Inch | SKU: AT3-AT15-MLOK-BUILD-SET-12-BB
- AT3™ AT-15 M-LOK Builder Set - Anodized and Cerakote - Color: Tungsten, Length: 12 Inch | SKU: AT3-AT15-MLOK-BUILD-SET-12-TG
- AT3™ AT-15 M-LOK Builder Set - Anodized and Cerakote - Color: Titanium, Length: 12 Inch | SKU: AT3-AT15-MLOK-BUILD-SET-12-TI
- AT3™ AT-15 M-LOK Builder Set - Anodized and Cerakote - Color: Black, Length: 15 Inch | SKU: AT3-AT15-MLOK-BUILD-SET-15-BLK
- AT3™ AT-15 M-LOK Builder Set - Anodized and Cerakote - Color: Flat Dark Earth, Length: 15 Inch | SKU: AT3-AT15-MLOK-BUILD-SET-15-FDE
- AT3™ AT-15 M-LOK Builder Set - Anodized and Cerakote - Color: OD Green, Length: 15 Inch | SKU: AT3-AT15-MLOK-BUILD-SET-15-ODG
- AT3™ AT-15 M-LOK Builder Set - Anodized and Cerakote - Color: Pink, Length: 15 Inch | SKU: AT3-AT15-MLOK-BUILD-SET-15-PNK
- AT3™ AT-15 M-LOK Builder Set - Anodized and Cerakote - Color: Burnt Bronze, Length: 15 Inch | SKU: AT3-AT15-MLOK-BUILD-SET-15-BB
- AT3™ AT-15 M-LOK Builder Set - Anodized and Cerakote - Color: Tungsten, Length: 15 Inch | SKU: AT3-AT15-MLOK-BUILD-SET-15-TG
- AT3™ AT-15 M-LOK Builder Set - Anodized and Cerakote - Color: Titanium, Length: 15 Inch | SKU: AT3-AT15-MLOK-BUILD-SET-15-TI
- AT3™ AT-15 M-LOK Builder Set - Anodized and Cerakote - Color: Red, Length: 9 Inch | SKU: AT3-AT15-MLOK-BUILD-SET-9-RED
- AT3™ AT-15 M-LOK Builder Set - Anodized and Cerakote - Color: Red, Length: 12 Inch | SKU: AT3-AT15-MLOK-BUILD-SET-12-RED
- AT3™ AT-15 M-LOK Builder Set - Anodized and Cerakote - Color: Red, Length: 15 Inch | SKU: AT3-AT15-MLOK-BUILD-SET-15-RED
Customer reviews 9
Verified buyer AT3 Tactical · Thank you for leaving a review! We are so glad to hear that you were impressed with the fit and finish of our AT3™ AT-15 M-LOK Builder Set. We strive to provide high-quality products at a reasonable price. We hope you enjoy your set and thank you for choosing AT3 Tactical!
AT3 Tactical · Thank you for leaving a positive review for our AT3™ AT-15 M-LOK Builder Set! We're glad to hear that you are satisfied with the quality and fit of the parts, as well as the color of the cerakote finish. Our team works hard to ensure that our products meet our customers' expectations. We also appreciate your feedback on our quick shipping. Thank you again for choosing AT3 and happy building!
AT3 Tactical · Thank you for taking the time to leave a review! We're thrilled to hear that you were impressed with the quality control and cerakote job on our AT3™ AT-15 M-LOK Builder Set. We agree, the OD green color looks fantastic. We appreciate your support and hope you enjoy your new build. Happy shooting!
AT3 Tactical · Thank you so much for taking the time to leave us a review! We're thrilled to hear that you're loving the AT3™ AT-15 M-LOK Builder Set. Our team takes great pride in offering top-quality products, and we're happy to hear that it shows. Thanks again for your support!
AT3 Tactical · Thank you for your positive review! We are thrilled to hear that you are happy with your AT3™ AT-15 M-LOK Receiver Set and that the cerakote was to your liking. Our team takes great care in packaging and shipping our products, and we are glad to hear it arrived quickly and safely. We appreciate your support and hope you continue to enjoy your purchase. Thank you for choosing AT3™!
AT3 Tactical · Thank you for leaving a review for our AT3 AT-15 M-LOK Receiver Set. We're glad to hear that you are enjoying the FDE receiver set and that the finish is meeting your expectations. We hope the rest of your build process goes smoothly and that you are happy with the final result. If you ever have any questions or concerns, please don't hesitate to reach out to us - we're always happy to help.
AT3 Tactical · Thank you for your review! We are glad to hear that you are satisfied with the quality and appearance of our AT3™ AT-15 M-LOK Receiver Set. We take pride in ensuring a perfect fit and finish for our products. We appreciate your support and look forward to serving you again in the future.
Questions & Answers 3
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Warranty & returns
Backed by the AT3 Lifetime Warranty!
All AT3 Tactical Brand Products carry a lifetime warranty against manufacturer’s defects.
This includes AT3 Red Dot Sights, Handguards, Iron 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.
