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Master-Fit® Armorer's Crowfoot Wrench Heads (Individual)

Master-Fit® Armorer's Crowfoot Wrench Heads (Individual)

1-1/16-INCH FREE-FLOAT BARREL NUT WRENCH

  • Fits common AR15 free-float barrel nuts
  • Precision-machined for tight engagement
  • Reduces risk of nut rounding
  • Fits 1/2-inch drive torque wrench
$34.99
$34.99
Sale Available Soon

It is generally a crime in California to engage in any of the following conduct without a valid license to manufacture firearms: (A) Manufacturing more than three firearms per calendar year in California. (B) Manufacturing a firearm using a three-dimensional printer or CNC milling machine. (C) Manufacturing a firearm for the purpose of selling or transferring ownership of that firearm to another individual who is not licensed to manufacture firearms. (D) Manufacturing a firearm for the purpose of selling, loaning, or transferring that firearm, with the intent to complete the sale, loan, or transfer without a required background check initiated by a licensed firearms dealer. (E) Allowing, facilitating, aiding, or abetting the manufacture of a firearm by a person who is legally prohibited from possessing firearms. (F) Manufacturing, or causing the manufacture of, assault weapons, machineguns, undetectable firearms, unserialized firearms, unsafe handguns that are not on the Department of Justice roster of handguns certified for sale in California, or other generally prohibited weapons.

AVMF1116BNW

Product Info

Master-Fit ½” Crowfoot Wrenches are purpose built and specialized for precise fitment to minimize marring on gun parts. Constructed of titanium coated stainless steel, delivering the highest level of precision to confidently apply torque to AR platform.

DESIGNED SPECIFICALLY FOR GUN NUTS

Now you can say I’ve got a wrench for that! No more rigging and adapting generic wrenches to complete your builds.

Product Features

  • Precision-machined for tight engagement and reduced risk of nut rounding
  • Fits all standard 1/2-inch drive torque wrenches
  • Supports accurate torque application for critical components
  • Minimizes marring and component damage during installation
  • Specialized profiles for low-clearance and metric applications

Read Detailed Description

The MASTER-FIT® Armorer’s Crowfoot Wrench series is engineered for the builder who demands shop-level precision and a mar-free finish. When it comes to AR15 assembly, generic, sloppy-fitting wrenches can round off edges or slip under pressure. Each Master-Fit wrench is precision-machined to provide a high-tolerance, no-slip interface with your specific hardware, whether you are clocking a muzzle device, staking a castle nut, or seating a stubborn free-float barrel nut.

Professional Performance
Every wrench in this lineup is designed to fit a 1/2-inch drive torque wrench, allowing you to meet exact manufacturer specifications for safety and reliability. Built from high-quality materials, these tools are designed to withstand high-torque demands without flexing or deforming, significantly reducing the risk of "tool walk" or finish damage on your receiver and handguard.

Comprehensive Compatibility
The Master-Fit system allows you to select the exact tool required for your specific build. From standard Delta Rings and A2 extension tubes to oversized free-float barrel nuts and specialized 3-prong flash hiders, these individual heads provide a centered load distribution that standard multi-tools cannot match.

View full details

Fan of the Master-Fit® Armorer's Crowfoot Wrench Heads (Individual)? You should check these out.

Professional-grade tools and accessories for your essential firearm maintenance and customization needs:

  • 5 stars: 10 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
R
Richard Coffin

Works as advertised

B
BOB

Cant get any more REAL than these two puppies

J
JDJ6380

Fit like a glove on a Surefire 4-Prong flash hider. All my other wrenches were too tall to fit the very narrow flats on that flash hider.

S
Steve Williams

Perfect tool, reasonable shipping time.

L
Larry Cooper

As Advertised

G
George A Muzny

Works well and is well made. Super strong!

N
Nathan Chao

Great tool, way better than the universal armorer's wrenches that don't fit properly over the barrel nuts, especially the Chinese branded ones. The socket fit snuggly with no play over the GI delta ring nut.

S
Sean O

I recently purchased the 30mm crows foot wrench for a free floating barrel nut. I selected this brand because it appeared to be manufactured for more strength against spread and subsequent nut rounding by having more mass of steel surrounding the nut opening than other brands of crows foot wrench heads I looked at. In this regard I got what I was looking for and it's a true 5 star tool.
As much as I appreciate the quality of the tool, the wrench head is actually just a touch too beefy. The barrel nut I needed to torque is from Wilson Combat (pn# TR-Trim-Nut for reference). The thickness of this wrench head was slightly too thick to fit on the nut flats. The wrench head mic's out at .45" thick, and I had to machine it down to .38" in order to get the proper fit. After that it worked as it was supposed to with no sign of spread or slippage. It's just frustrating and inconvenient to pay a premium on the tool and then have to immediately modify it in order to use it.

A
Anonymous

Like a hand in a glove. Maybe even better

R
Rick Winniford

Exactly the one thing I needed that the other armorer's tools I have didn't provide.