AT3™ Replacement Barrel Nut for SPEAR M-LOK and Pro Quad Rail Handguards
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- 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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From orders that included this itemProduct description
Replacement Barrel Nut for SPEAR and Pro Quad Rails
This lightweight aluminum barrel nut works with all of the AT3 Tactical handguards. If you’ve damaged or misplaced your barrel nut, this part will work so you can get your build back up to speed in no time. If you don’t have your barrel nut wrench, you can also pick up an AT3 Barrel Nut Wrench here.
Includes
- AT3 Barrel Nut
- 2 SPEAR Barrel Nut Set Screws 8-32 x 1/2″
- 2 SPEAR Pinch Screws 10-32 x 7/16″
- 5/64 Allen Wrench
- 5/32 Allen Wrench
Specifications
- Compatible Handguards: AT3 SPEAR M-LOK and Pro Quad Rails
- Finish: Anodized
- Barrel Nut Material: 7075-T6 Aluminum
- Barrel nut inside diameter: 1.02” (compatible with barrels up to 1” diameter)
- Torque Range: 30-60 FT/LBS.
Customer reviews 3
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AT3 Tactical · Thanks for the positive feedback! We're glad to hear that our barrel nut wrench is working well for you. We appreciate your support and hope to continue providing quality products for your needs. Have a great day!
AT3 Tactical · Thank you for your positive review! We're glad to hear that our replacement barrel nut worked well for your AR build and that it has exceeded your expectations. We strive to provide quality products at affordable prices, and we're happy to know that we've delivered on that for you. Happy shooting!
Questions & Answers 4
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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.
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.















