AT3™ AR-15 Barrel Nut & Delta Ring Assembly

SKU: DR-01

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Mil-Spec Delta Ring Assembly for AR15/M4/M16

Fully assembled, and consists of 4 parts: Mil-Spec Barrel Nut Delta Ring, Snap Ring, and Weld Spring. If you have damaged your delta ring assembly, or constructing a new rifle, these parts will fit onto your upper AR-15 upper without issue. Like all of our parts, this assembly is backed by the AT3 Lifetime Warranty.


  • Fit: AR-15
  • Barrel Nut Material: Steel
  • Delta Ring Material: Aluminum
  • Delta Ring Finish: Hardcoat Anodized

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.

Customer Reviews

Based on 34 reviews
Kevin hobbs
Delta ring

Great fit finish looks good on my rifle

Thanks for sharing your feedback, Kevin. We're glad you're satisfied with your purchase. Cheers!

Emmanuel Hermosillo

AT3™ AR-15 Barrel Nut & Delta Ring Assembly

Thank you for leaving a review for our AT3™ AR-15 Barrel Nut & Delta Ring Assembly. We are glad to hear that you are satisfied with your purchase. We appreciate your support and hope to continue providing high-quality products for your firearm needs. Thank you again for choosing AT3 Tactical.

Joseph Schoenberg
Delta ring assembly

The assembly went on the upper receiver with no problem, however, the quad rail did fit on it. I had to use the previous delta ring assembly that I had on hand which came off of another build.

Philip Monday
Delta ring assembly

Works great. For the price, can't beat. Ordered many.

Thanks for sharing your feedback! We're glad you're satisfied with your purchase.

AT3™ AR-15 Barrel Nut & Delta Ring Assembly

Good product great service reasonable price.

Thanks for sharing your feedback! We're glad you're satisfied with your purchase.