Meet the Master-Fit A2/AR15 Crowfoot Wrench Set — a purpose-built toolkit for gunsmiths, hobbyists, and AR enthusiasts who demand precise fitment and durable performance. Built to handle A2 barrel nuts, muzzle devices, buttstocks, and castle nuts with confidence.
Paired with the heavy-duty Master-Fit Torque Wrench, it takes Gun DIY building to a new level of Master Grade quality and precision. Upgraded tools for upgrading guns!
Key Features & Design
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Comprehensive AR toolkit: Includes 4 specialized crowfoot builder wrenches that fit the most common A2/AR15 assembly nut sizes and a heavy-duty ½” torque wrench.
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Material & finish: Titanium coated stainless steel construction provide tight tolerances for solid nut-gripping strength and enhanced no-slip fitment.
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Delta ring / barrel nut wrench: Master-fit delta ring / free-float barrel nut wrench.
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Muzzle device wrenches: 3/4″ muzzle device wrench; 5/8″ muzzle device / a2 buttstock extension tube wrench.
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Castle nut options: Extended & standard castle nut wrench.
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Storage: Storage rail and storage strip included for organized tool storage.
Whether you’re tightening a delta ring, locking down a barrel nut, or dialing in a muzzle device, this set keeps things tight, predictable, and surprisingly satisfying.
