Skeletonized AR-15 Lower Build Kit
or 4 interest-free payments of $87.50 with 
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.
- Free standard shipping on orders $139+ details
- 90-day no-hassle returns policy
- Backed by 7 brand warranties what it covers
Product description
AT3 Tactical Skeleton AR-15 Lower Build Kit – Lightweight Fixed Stock Setup
Features
- Includes the lower parts needed to complete a stripped AR-15 lower receiver with a skeletonized, lightweight fixed-stock setup
- Luth-AR MBA-2 Skullaton stock gives the lower a stripped-down fixed rifle profile without using a collapsible carbine stock assembly
- Adaptive Tactical LTG grip keeps the front-end furniture light and simple while matching the skeletonized build theme
- Upgraded control parts include a BAD enhanced bolt catch, Odin Works extended magazine release, Timber Creek pivot/takedown pins, and Armaspec ambidextrous safety selector
- Uses a Luth-AR rifle fixed buffer tube kit instead of a standard carbine buffer assembly
The AT3 Tactical Skeleton AR-15 Lower Build Kit is built for finishing a stripped lower with a lightweight, skeletonized fixed-stock layout. It combines an MBA-2 Skullaton stock, Adaptive Tactical lightweight grip, flat-face mil-spec trigger, and upgraded lower controls for builders who want a cleaner skeleton build without defaulting to a basic carbine stock and standard mil-spec controls.
Note: This kit is not assembled. Stripped lower receiver is not included.
Warranty Note: Curated by AT3 Tactical. Components in this kit are covered by each manufacturer’s own warranty — AT3’s warranty does not extend to or replace the warranties of the individual parts included. Warranty terms for some component brands may not yet be listed in the warranty tab; contact the manufacturer directly for in-depth and up to date coverage details.
Specifications
- Brand: AT3 Tactical
- Model: Skeleton AR-15 Lower Build Kit
- MPN: AT3-SKEL-AR15-LWRBK
- Platform: AR-15
- Build Style: Skeletonized fixed-stock lower
- Trigger: AT3 GI Trigger Assembly – Mil-Spec 6 lb Single-Stage Flat Face Trigger
- Stock: Luth-AR MBA-2 Skullaton Fixed AR-15 Rifle Stock
- Grip: Adaptive Tactical LTG AR-15 Lightweight Tactical Pistol Grip
- Safety Selector: Armaspec FULCRUM-45/90 Ambi AR-15 Safety Selector
- Bolt Catch: Battle Arms Development Enhanced AR-15 Billet Bolt Catch
- Magazine Release: Odin Works XMR3 Extended Magazine Release
- Trigger Guard: Timber Creek Outdoors Oversized Trigger Guard
- Buffer System: Rifle fixed buffer tube kit
- Color: Black
What’s Included
- 1x AT3 GI Trigger Assembly – Mil-Spec 6 lb Single-Stage Flat Face Trigger
- 1x Timber Creek Outdoors AR Oversized Trigger Guard – Black
- 1x Timber Creek Outdoors AR Pivot and Takedown Pin Set – Black
- 1x Battle Arms Development Enhanced AR-15 Billet Bolt Catch – Black
- 1x AT3 Mil-Spec AR-15 Bolt Catch Plunger
- 1x AT3 Mil-Spec AR-15 Bolt Catch Pin
- 1x AT3 Mil-Spec AR-15 Bolt Catch Spring
- 1x Odin Works XMR3 AR-15 Extended Magazine Release – Gen 3 – Black
- 1x AT3 Mil-Spec AR-15 Magazine Catch Spring
- 1x AT3 Mil-Spec AR-15 Magazine Catch – Black
- 1x Armaspec FULCRUM-45/90 Ambi AR-15 Safety Selector – Black
- 1x AT3 Mil-Spec AR-15 Selector Detent
- 1x AT3 Mil-Spec AR-15 Selector Detent Spring
- 1x Luth-AR .223/5.56 AR-15 Mil-Spec Rifle Fixed Buffer Tube Kit
- 1x AT3 Mil-Spec AR-15 Buffer Retainer
- 1x AT3 Mil-Spec AR-15 Buffer Retainer Spring
- 1x Adaptive Tactical LTG AR-15 Lightweight Tactical Pistol Grip
- 1x Luth-AR MBA-2 Skullaton Fixed AR-15 Rifle Stock for A2 Buffer Tubes
Customer reviews
No reviews yet. Bought this one? Tell the next builder how it went.
Questions & Answers
No questions yet. Ask about fit, install or compatibility and our team answers within a business day.
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.
Backed by the Luth-AR Warranty!
Luth-AR Limited Warranty
- Luth-AR, LLC manufactured products are warranted for 1 (one) year from the date of purchase against manufacturing defects in material and/or workmanship. All parts and labor or replacement, at our option, are covered.
- Government fees, damage caused by failure to perform normal maintenance, sales outside the United States, damage due to high velocity, high pressure, reloaded, or other non-standard ammunition, or any unauthorized repair, modification, misuse, abuse, or alteration of the product is not covered by this limited warranty.
- Consumable items such as gas rings, O’ rings, etc., are not warranted.
- Luth-AR, LLC complete assembled uppers will be warranted for a period of 1 (one) year after the complete upper was purchased.
- The warranty applies towards defects in materials or workmanship of the complete upper. Luth-AR will pay for all warranty repairs, at no charge to the consumer. Please supply a copy of the invoice for proof of purchase.
- The use of re-load ammunition, proof rounds, or factory ammunition that exceeds initial SAAMI specifications voids any warranty. Any repairs or modifications not done by Luth-AR also voids any warranty.
- Complete uppers not assembled or built by Luth-AR are not covered by the 1 (one) year warranty.
- Please call our warranty department at (763) 263-0166 or email info@luth-ar.com for any warranty issues.
Disclaimer: Manufacturer’s warranty is subject to change without prior notice.
Backed by the TCO Lifetime Warranty!
Timber Creek Outdoors Lifetime Warranty
All Timber Creek products are backed by a Lifetime Warranty. To process the warranty request we require a detailed photo of the defective product and send it to info@timbercreekoutdoorsinc.com. If the defect can not be verified via photo, we may require that the product be returned.
You can also call the hotline 541-746-6198.
Disclaimer: Manufacturer’s warranty is subject to change without prior notice.
Backed by the Adaptive Tactical Warranty!
Adaptive Tactical Return/Refund Policy
Adaptive Tactical stands behind every product and guarantees your satisfaction with the quality of workmanship and materials. If at any time you feel their products do not meet your needs please return the item by following our below return process.
- Contact Adaptive Tactical for RMA Number prior to shipping returns
- Include a copy of RMA with the returned product
- Ship authorized returns via USPS or UPS Ground
- Do not destroy merchandise
- Credit Memo will be issued upon receipt of merchandise
Contact Details:
- Phone: (208) 442-8000
- Email: sales@adaptivetactical.com
Disclaimer: Manufacturer’s warranty is subject to change without prior notice.
Backed by the Armaspec Lifetime Warranty!
Armaspec Lifetime Warranty
- All Armaspec products carry a LIFETIME WARRANTY and are warranted to be free from defects in material or workmanship.
- Should there be a defect, we will repair or replace the product at our discretion at no cost to you.
- Lifetime warranty does not apply to products sold as “blemished” or “manufacturer refurbished”.
- You must have proof of purchase to initiate a WARRANTY claim.
Please email to rma@armaspec.com to request an RMA number.
Disclaimer: Manufacturer’s warranty is subject to change without prior notice.
Limited Lifetime Warranty
All Battle Arms Development, Inc. (BAD INC) products have a limited lifetime warranty against any and all manufacturer’s defects and workmanship to the buyer/customer. The warranty does not cover normal maintenance. Warranty claims may be generated by filling out the online support form for a Return Merchandise Authorization (RMA). Once the support form is received and approved, the customer will be assigned an RMA # and may ship the warranty product to BAD INC per the RMA instructions.
Shipping to and from BAD INC’s facilities, government fees, damages caused by lack of maintenance, international sales, are not covered by this warranty. Once the warranty product is received, BAD INC will inspect and evaluate for warranty eligibility. If the product is determined by BAD INC to be covered by the warranty, BAD INC will either repair or replace it at BAD INC’s discretion. Warranty products received without an RMA # will not be accepted and will be returned to the sender.
No COD shipments will be accepted. This warranty does not apply to abuse, negligence, or normal wear and tear of any parts or protective finishes. Warranty does not cover product compatibility issues with after-market accessories. Any modification to the product from the factory shipped condition will render the warranty null and void. Proof of purchase must be provided at the time of the warranty service.
The following are specifically excluded from coverage under this warranty and/or will cause said warranty to become null and void:
- Rust or corrosion
- Barrel obstruction
- Damage or malfunction resulting from accident, negligence, misuse, or unauthorized repair or alteration.
- Use of ammunition other than NATO and/or SAAMI specification new factory production ammunition.
- Use of any hand loaded, reloaded, imported or, factory re-manufactured ammunition.
- Failure to provide reasonable and necessary maintenance as described in the Operator’s Manual/documentation accompanying the product.
- Use of replacement parts other than parts authorized by BAD INC for use in BAD INC products
- Any unauthorized repair or any alteration, including those of a cosmetic nature, performed on the product by an individual, organization, company, or entity other than BAD INC.
- Unreasonable or excessive use of the product.
- Any finished products that are not assembled at BAD INC’s facilities or are assembled using imported or used parts.
- This includes complete rifle kits, upper receivers, lower receivers, barrel assemblies, etc.
No implied warranties of any kind are made herein.
Limited Warranty does not apply to any products sold that are not manufactured by BAD INC.
Those products are covered under their respective manufacturer’s warranty. BAD INC assumes no liability for accidental or consequential damages. Some states do not allow the exclusion or limitation of accidental or consequential damages and therefore this limitation may not apply to you.
Backed by the ODIN Works Lifetime Warranty
ODIN Works Lifetime Warranty
At ODIN Works your satisfaction is our commitment. We firmly stand behind our products and craftsmanship so If your ODIN Works product is found to be defective, we will repair or replace it free of charge for the life of the part.
The ODIN Works Lifetime Warranty does not apply if the product has been found to be misused, modified, or damaged.
*This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
For claims, please request an RMA.
For any questions or concerns regarding service and/or repairs, please contact us at the details below:
Contact Details:
- Telephone: 1-208-906-1405
Disclaimer: Manufacturer’s warranty is subject to change without prior notice.
90-day no-hassle returns
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.
