Spare Barrel Nut Wrench for AT3’s Handguards
The AT3 AR-15 Barrel Nut Wrench is laser-cut to get a precise fit on the wrench flats found on most AR-15 Barrel Nuts. It is compatible with any AR-15 barrel nut that requires a 1-3/16″ wrench. Pair it up with any 1/2″ drive torque wrench to make sure your barrel is properly installed on your AR-15 upper receiver. Any needs you have for installation and maintenance will be made simple.
Barrel Nut Compatability:
- AT3 Spear Handguards
- AT3 Spear XL Handguards
- AT3 Quad Rail Handguards
- 2A Basics ASAL Handguards
- All STNGR Handguards
- Any Barrel Nut that requires a 1-3/16″ Wrench
Here’s a quick tip: when you’re installing your barrel nut on an upper receiver, make sure your barrel nut wrench is at a 90 degree angle from your torque wrench. This will provide the most accurate torque for the value you set on your wrench.
Specifications:
- 1/2 Inch Drive
- 1-3/16 Inch Inside Diameter
- Laser-Cut Steel
- Made in the USA
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.

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.