Wrench Heads

SOLID NUT-GRIPPING STRENGTH AND ENHANCED NO-SLIP CONTROL

The Master-Fit 13-Piece AR15 Crowfoot Wrench Set, Master-Fit 5-Piece A2 Crowfoot Wrench Set, and the Master-Fit Armorer’s Crowfoot Adjustable Wrench are all designed to provide specialized solutions for firearm maintenance. The 13-piece set includes 12 crowfoot builder wrenches that fit common AR15 assembly nut sizes and a heavy-duty torque wrench for precise adjustments; each tool is made from durable titanium-coated stainless steel and comes organized in a professional storage case. The 5-piece A2 set is purpose-built for manipulating A2-style AR15 barrel nuts, buttstocks, muzzle devices, and castle nuts; it includes four crowfoot wrenches and a heavy-duty torque wrench also made of titanium-coated stainless steel stored on an included rail within a hard-sided storage case. Lastly, the adjustable armorer’s crowfoot wrench provides precise fitment for gun parts of various tolerances making it ideal for applications like AR platform muzzle devices and barrel nuts.

ENHANCED NO-SLIP CONTROL

an advertisement for a tool set and ratchet wrench

MASTER-FIT® 13-PIECE AR15 CROWFOOT WRENCH SET

13-PIECE MASTER GRADE ARMORER’S TOOL SET WITH PROFESSIONAL STORAGE CASE

The 13-PIECE MASTER GRADE ARMORER’S TOOL SET WITH PROFESSIONAL STORAGE CASE is a comprehensive collection for firearm maintenance. It includes 12 specialized crowfoot builder wrenches, designed to fit common AR15 assembly nut sizes, and a heavy-duty ½” torque wrench for precise adjustments. Each tool is made from durable titanium-coated stainless steel and comes neatly organized in a professional storage case with individual compartments for each tool, ensuring easy access and secure storage.

MASTER-FIT® 5-PIECE A2 CROWFOOT WRENCH SET

UPGRADE YOUR A2-STYLE AR15 WITH THE MASTER-FIT® 5-PIECE A2 CROWFOOT WRENCH SET

The Real Avid Master-Fit 5-Piece A2 Crowfoot Wrench Set is a purpose-built and specialized tool set for precise fitment and manipulation of A2-style AR15 barrel nuts, buttstocks, muzzle devices, and castle nuts. The set includes 4 crowfoot wrenches and a heavy-duty Master-Fit Torque Wrench, with titanium-coated stainless steel construction for enhanced no-slip fitment and solid gripping strength. The wrenches are organized and stored on the included storage rail and hard-sided storage case. Upgrade to Master-Fit for a new level of Master Grade® quality and precision in Gun DIY® building.
the wrench set and ratcheting wrench are shown
an advertisement for the new gun nuts

MASTER-FIT® ARMORER’S CROWFOOT ADJUSTABLE WRENCH

FIRST OF IT’S KIND, DESIGNED SPECIFICALLY FOR GUN NUTS

The Master Fit Armorer’s Crowfoot Adjustable Wrench was designed to provide a precise fit for gun parts of various tolerances. It’s the first adjustable crowfoot wrench designed specifically for guns, so you can rest assured that you’ll apply the appropriate torque needed for applications like AR platform muzzle devices and barrel nuts, without marring your investment.

MASTER FIT WRENCH HEADS

MASTER GRADE AR15 CROWFOOT ARMORER’S WRENCH

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.
the instructions for how to use an adjustable wrench
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