AT3 Barrel Builder Kit – 10.5″ 5.56 NATO Government Profile Carbine Length Barrel, Gas Block & Gas Tube
or 4 interest-free payments of $29.60 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 the AT3 Lifetime Warranty! what it covers
Product description
AT3 Barrel Builder Kit – 10.5 Inch 5.56 Government Barrel, Gas Block, and Gas Tube
Features
- Includes the barrel and gas system parts for a 10.5 inch 5.56 NATO AR-15 upper build
- Built around an AT3 10.5 inch 5.56 NATO Government profile barrel with a carbine-length gas system
- Includes a low-profile .750 steel gas block and carbine-length stainless gas tube
- Includes two gas tube roll pins for installation or backup
- Leaves the bolt carrier group choice up to the builder
The AT3 Barrel Builder Kit gives you the core barrel and gas system parts for a compact 5.56 NATO AR-15 upper build. It pairs a 10.5 inch Government profile barrel with a carbine-length gas system, low-profile gas block, stainless carbine gas tube, and two gas tube roll pins while leaving the BCG choice open for builders who prefer a specific carrier group.
Note: This kit is not assembled. Bolt carrier group, upper receiver, handguard, charging handle, muzzle device, and small installation tools are not included.
Specifications
- Brand: AT3 Tactical
- Model: Barrel Builder Kit – 10.5 Inch 5.56 Government Carbine-Length
- MPN: AT3-BBKIT-105-556-GOV-CAR-GB-GT
- Platform: AR-15
- Caliber: 5.56 NATO
- Barrel Length: 10.5 inches
- Barrel Profile: Government
- Gas System Length: Carbine
- Gas Block Journal: .750 inch
What’s Included
Customer reviews
No reviews yet. Bought this one? Tell the next builder how it went.
Questions & Answers 1
Loading questions…
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.
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.
