AT3 Tactical AR-15 Barrel - 4.5" - .22LR - Tapered Profile
or 4 interest-free payments of $22.37 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
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Product description
Precision Rimfire Performance in a Compact Package
Bring the versatility of .22LR to your AR build with this tapered 4.5″ barrel from AT3™. Crafted from premium 4150 CrMoV steel per MIL-B-11595E specs and protected by a rugged black nitride finish.
The tapered profile trims weight while maintaining accuracy with .22LR ammunition. At just 4.5″ long with 1/2×28 muzzle threads, it’s an ultra-compact option for dedicated .22LR AR uppers or PDW-style pistol builds.
Designed for reliable cycling when paired with the AT3™ .22LR bolt carrier group and Black Dog Machine magazines. This tough little barrel delivers consistent rimfire performance in a space-saving platform.
Specifications
- Brand: AT3™
- Model: Tapered 4.5″ .22LR Barrel
- MPN: AT3-22LR-4.5
- Material: 4150 CrMoV Steel (Mil-B-11595E)
- Finish: Black Nitride
- Length: 4.5″
- Twist Rate: 1/16
- Muzzle Threads: 1/2×28
- Intended Use: Dedicated .22LR AR-15 Uppers/Pistols
- Compatible BCG: AT3™ .22LR BCG
- Compatible Magazines: Black Dog Machine .22LR
Customer reviews 2
Verified buyerAT3 Tactical · Hi there! Thank you for leaving a review for our AT3™ .22LR Tapered Profile 4.5 Inch AR-15 Barrel. We're so glad to hear that you're enjoying its affordable price and high quality. It sounds like you're having a blast hitting those 6in steel targets from the hip at 50 yards - impressive! Thanks for the recommendation, we appreciate it. Keep on shooting!
Questions & Answers 1
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Is this 4.5" 22lr AR barrel compatible with the cmmg bolt/collar?
Pete TenHoopen · Jan 7, 2025AT3 Support Team — Yes. The AT3™ .22LR Tapered Profile 4.5 Inch AR-15 Barrel is compatible with the CMMG bolt and collar system designed for .22LR conversions.
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.
