Midwest Industries AR-15 Barrel Nut Wrench - Castle Nut Driver - 1/2" Drive
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- 90-day no-hassle returns policy
- MI Limited Lifetime Warranty! what it covers
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Product description
Midwest Industries Premium AR-15 Barrel Nut Wrench – 17-4 Stainless Steel
Features
- Fits all Midwest Industries free float barrel nuts
- Compatible with CRMHD, CRM, SLH, CRT, CRLW, ULW, G3M, G4M, and SP Series handguards
- Three-notch driver securely engages standard castle nuts
- Integrated 1/2-inch drive accepts a torque wrench
- Works with 5.56 and 7.62 AR platform components
- Machined from durable 17-4 stainless steel for repeated use
The Midwest Industries Premium Barrel Nut Wrench provides the correct engagement for installing or removing Midwest Industries free float barrel nuts. Its three-notch castle nut driver and 1/2-inch torque wrench interface allow the same tool to handle handguard installation and receiver extension work. The 17-4 stainless steel construction is built for regular use on the bench or in an armorer’s kit.
Specifications
- Brand: Midwest Industries
- Model: Premium Barrel Nut Wrench
- MPN: MI-BNW
- Compatibility: Midwest Industries CRMHD, CRM, SLH, CRT, CRLW, ULW, G3M, G4M, and SP Series free float barrel nuts
- Castle Nut Engagement: Three-notch
- Torque Wrench Drive: 1/2″
- Material: 17-4 Stainless Steel
What’s Included
- 1x Midwest Industries Premium Barrel Nut Wrench
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Questions & Answers 1
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Can this apply 60 to 80 ft.lbs. of torque for a barrel nut?
Rich · Jul 25, 2026AT3 Support Team — Yes, this Midwest Industries wrench is constructed from heavy-duty heat-treated steel and is fully rated to handle the 60 to 80 ft-lbs of torque required for tightening a barrel nut.
Warranty & returns
MI Limited Lifetime Warranty!
Midwest Industries Limited Lifetime Warranty
- Midwest Industries, Inc. stands behind every item we produce. If you are the original purchaser and a MI product fails due to manufacturing, assembly, or material defect, and you have not modified or abused the item, it will be repaired or replaced for life.
- Modification or alteration to these parts including custom coatings, voids all factory warranties.
- We are not responsible for items intentionally/accidentally damaged or destroyed, or products damaged by abuse/poor maintenance.
- This warranty is limited to the repair or replacement of the part or parts which are returned to Midwest Industries, Inc. and are determined by Midwest Industries, Inc. to be defective.
- This warranty, made to the original owner/purchaser, is not transferable.
The following items are excluded from this warranty:
- Normal wear of product finishes and of all metal or plastic parts.
- Damage or malfunction resulting from accident, negligence, misuse, or unauthorized repair or modification.
Disclaimer: Manufacturer’s warranty is subject to change without prior notice.
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.
