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Armorer's Wrench for AR-15 & Multi-Function Tool by AT3™

Armorer’s Wrench for AR-15 & Multi-Fuction Tool by AT3™

In Stock

Lifetime WarrantyOn All AT3 Brand Products

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.

Fast & Free Shipping On orders over $50

You will receive fast, free shipping for all orders over $50

Shipping cost is $7.99 for orders under $50. We ship with UPS or USPS, depending on the item.

Most orders received by 1pm CST ship the same day

You will receive an email with tracking information at the time of shipment. To expedite shipping, we may ship your order from multiple warehouses. Orders placed on weekends, holidays, or after 1pm will ship the following business day.

This perfect tool for AR builds that allows installation & removal of barrel nuts, muzzle devices, rifle buffer tubes, and castle nuts.

This tool includes:

  • A barrel nut wrench that can handle delta-rings, free float barrel nuts, and 30mm barrel nuts like the AT3 PROLOK handguard
  • 1/2″ torque wrench adaptor
  • Castle and jam nut wrench (for both old and new style castle nuts)
  • A 3/4″ wrench slot for installation of most muzzle devices
  • A cutout for installing/removing rifle-length buffer tubes


  • Material: 4140 Steel
  • Finish: Powdercoat

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Customer Reviews

Based on 14 reviews
Armorer's wrench

Very nice quality works well.

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

Wrench works perfectly. Got everything nice and tight. Would definitely recommend.

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

Worked asadvertised

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

The quality of the merchandise was great and I liked how I received stickers with the order.

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

I like this wrench, it does everything you need to tinker with your AR at a good price too. I would recommend.

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