Free shipping may be available for qualifying U.S. orders; checkout confirms eligibility.

Check out what's on Sale! Shop Now!

AT3 Tactical  |  SKU: AT  |  UPC: 97942818

AT3 Barrel Nut Wrench for SPEAR M-LOK and Pro Quad Rails

Regular price $9.99 USD
Shipping calculated at checkout.

Replacement barrel nut wrench for compatible AT3 SPEAR M-LOK and Pro Quad Rail handguards, made from laser-cut steel.

By continuing to checkout, you agree to our Terms of Service, Shipping Policy, Return Policy, and product restrictions.

⚠️ Sold for sporting and training applications. Customer is responsible for ensuring compliance with all applicable local laws and regulations. See Terms .


🚚 Shipping & Delivery

Most in-stock orders are typically processed within 1–2 business days before carrier handoff. Processing time is separate from carrier transit time.

The shipment estimate shown above appears only for eligible in-stock, inventory-tracked variants. Backordered, preorder, special-order, custom, imported, and manufacturer-direct items may take longer. Product-specific dates are provided in good faith and are not guaranteed delivery dates.

Available shipping services, final charges, and carrier transit estimates are shown at checkout. See our Shipping Policy for current details.

🔄 Returns, Exchanges & Warranty

Eligible non-custom returns must be requested within 30 days of delivery. Items must be unused, uninstalled, unmodified, and in their original, undamaged packaging.

Eligible standard returns may be subject to a 15% restocking fee. EU withdrawal returns are handled under applicable statutory rights; prohibited restocking fees do not apply, though lawful diminished-value deductions may.

Custom products, sale items, gift cards, perishable or personal-care goods, and hazardous materials are non-returnable except where applicable law or an approved warranty or defect claim requires otherwise.

Warranty Coverage: Manufacturer warranties apply to all standard products. Any defects, malfunctions, or performance issues are handled directly by the manufacturer per their terms.

HR Tactical Innovations covers a Fitment & Functionality Guarantee on all custom or modified items — if a verified production error occurs, we’ll replace the item.

View our Refund Policy for full details.

🌍 International Shipping

International shipping availability depends on the product, destination, applicable restrictions, and the services offered at checkout. Not every product can be shipped to every country or region.

Available services, charges, and any delivery estimates are calculated for the order and destination at checkout. Carrier and customs processing can affect delivery timing.

Import duties, VAT, taxes, brokerage fees, permits, and documentation may apply based on the destination and are not included unless checkout states otherwise.

Refused, unclaimed, returned, lost, seized, or delayed shipments and related claims are handled case by case under our current Shipping Policy, Refund Policy, and applicable law.

Questions? Contact [email protected] before checkout.

🎖️ Military / GovX Discounts

⚙️ Product Details

Spare Barrel Nut Wrench for AT3’s Handguards

If you lost the barrel nut wrench for your SPEAR M-LOK handguard or your Pro Quad Rail, or just need a spare, we now offer the wrench on its own. The wrench fits standard 1/2 Inch drive torque wrenches and breaker bars. This laser-cut tool provides a precise fit on the wrench flats for the SPEAR and Pro Quad Rail. Any needs you have for installation and maintenance will be made simple.

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 your wrench to.

Specifications

  • Mounting Interface
    M-LOK
  • Barrel Length
    2 in

Reviews & Questions

Payment & Security

Payment methods

  • Ach Direct Debit
  • Amazon
  • American Express
  • Apple Pay
  • Bancontact
  • Diners Club
  • Discover
  • Google Pay
  • iDEAL Wero
  • Mastercard
  • PayPal
  • Shop Pay
  • USDC
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Buy now pay later with Shop Pay

Buy now pay later with Shop Pay