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Cross Armory Castle Nut Wrenches Color: Black, Finish: Black, Caliber: Universal, $1.20 Off and Blazin' Deal

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Cross Armory Castle Nut Wrench for AR-15 and AR-10, High Carbon Steel, Black, Small, crCN-tool
Cross Armory Castle Nut Wrench for all AR-15 and AR-10, High Carbon Steel, Black, crCN-tool
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Cross Armory Castle Nut Wrench for AR-15 and AR-10, High Carbon Steel, Black, Small, crCN-tool
1 of 2 images
Cross Armory Castle Nut Wrench for AR-15 and AR-10, High Carbon Steel, Black, Small, crCN-tool
Cross Armory Castle Nut Wrench for all AR-15 and AR-10, High Carbon Steel, Black, crCN-tool
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Cross Armory Castle Nut Wrench for all AR-15 and AR-10, High Carbon Steel, Black, crCN-tool

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Questions & Answers
Will this work on a just rite carbine 9 mm Expert Answer

The Cross Armory Castle Nut Wrench is designed to work with all AR-15 and AR-10 castle nuts and should be able to work on most AR9 platform rifles/pistols as well. However, some AR9 uppers can be proprietary and may use a different barrel nut.

by Ethan, Gear Expert, July 27, 2022
Will this work on a S&W M&P Sport 2? Expert Answer

Yes this should work for it.

by Ryan Tarczynski, Gear Expert, May 26, 2021
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
BEST BANG FOR YOUR BUCK by Chris, Verified Owner, January 17, 2024
Best tool on the market!! Very good quality and the handle is comfortable to hold!!
1/1 found this helpful
Helpful Positive Review
Better than the rest by Spyder328, Verified Owner, December 15, 2022
I have multiple different brand wrenches and this is the only one that fits perfect every time and does NOT scratch the finish on the nut like the others do. Quality product and will be a tool I keep for life
1/1 found this helpful
Helpful Positive Review
More than i expected !! by james, March 30, 2021
This is a solid tool for castle nut removal, mates perfectly with the C nut, good solid and thick steel wrench, comfortable grip, Glad i made the right choice with this wrench. The price is right for a quality tool of this sort to be used for the ex...
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2/2 found this helpful
Helpful Positive Review
Thick, sturdy well built tool. by RTS, January 8, 2021
Support your small american companies like this. They make great products at a fair price. Thick tool unlike some that wont stay on the nut properly, this one is a perfect fit. I guess the only thing to make it a little better would be a cutout ...
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1/1 found this helpful
Helpful Positive Review
Solid Tool by Zero, Verified Owner, January 27, 2021
Did not mar the castle nut. The teeth fit perfectly in the cut outs and surprisingly easy to twist off. Mounted the lower in a table top vice setup and allowed me to easily replace the back plate with a sling adapter relatively easily in I would say ...
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1/1 found this helpful
Helpful Positive Review
Awesome build quality by David Skiles, Verified Owner, June 5, 2020
This thing feels and performs solid! No marring or soft metal, which is nice. Plus it’s a small company! It doesn’t get any better. I used this while building a 10/22 pistol and on my ruger ar-15. I was more than impressed!!! The value is excellent, ...
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1/1 found this helpful
Read All 59 Reviews

We've got an AWESOME deal for you!

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Blazin' Deal
Prices have been cut drastically on this product as part of a special offer. These prices are so low that there's no double-dipping with coupons or any additional discounts, but you'll still get the best deal out there. This offer won't last long, so don't miss out!
Color:
Black

Code: 32E-CNW-CRSARM6-CRCN-TOOL

MPN: crCN-tool

UPC: 617566986930

Blazin' Deal
List: $14.99Save $1.20
$13.79
Purchase Restrictions Purchase Restrictions

Product Info for Cross Armory Castle Nut Wrenches

The Cross Armory Castle Nut Wrench provides a perfect fit for Mil-Spec and commercial buffer tube castle nuts. Torture tested and proven to outlast all other competing castle nut wrenches! Each wrench features a rubberized grip for improved performance, 2X thicker material, case hardened High-Carbon Steel and the reliability, safety and comfort you have come to expect form Cross. Performs the job of a: Mil-Spec castle nut wrench and standard length receiver extension removal wrench.image

Specifications for Cross Armory Castle Nut Wrenches:

Manufacturer: Cross Armory
Color: Black
Finish: Black
Length: 6.75x1.25 mm
Caliber: Universal
Gun Model: AR-10, AR-15
Fabric/Material: Carbon Steel
Weight: 4 oz
Condition: New

Features of Cross Armory Castle Nut Wrenches

  • Best and strongest castle nut wrench on the market
  • Fits all AR-15 and AR-10 castle nuts
  • 2x thicker than standard castle nut wrench
  • Made from ultra high strength, high-carbon steel
  • Case hardened and black oxide coated

Package Contents:

  • Cross Armory Castle Nut Wrenches

What firearm models does the manufacturer say Cross Armory Castle Nut Wrenches is compatible with?

The manufacturer says that Cross Armory Castle Nut Wrenches is compatible with AR-15, AR-10

Cross Armory Castle Nut Wrenches Orderable Models

List of Orderable Models

  • Cross Armory Castle Nut Wrench for AR-15 and AR-10, High Carbon Steel, Black, Small, crCN-tool , MPN: crCN-tool , UPC: 617566986930 , Code: 32E-CNW-CRSARM6-CRCN-TOOL

Cross Armory Castle Nut Wrenches Unavailable & Discontinued Models

List of Unorderable Models

  • USED, Cross Armory Castle Nut Wrench for AR-15 and AR-10, High Carbon Steel, Black, Small, crCN-tool , MPN: crCN-tool-EDEMO , Code: 32E-CNW-CRSARM6-CRCN-TOOL-EDEMO-US-C
  • USED Cross Armory Castle Nut Wrench for AR-15 and AR-10, High Carbon Steel, Black, Small, crCN-tool, EDEMO4, Used, Condition Like New , MPN: crCN-tool-EDEMO4 , Code: 32E-CNW-CRSARM6-CRCN-TOOL-EDEMO4
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Last updated 2026-07-18 UTC.