The Armorer’s Master Wrench is the professional-grade AR15 build tool for gun DIY enthusiasts and armorers who demand precision, power, and comfort. Smarter, stronger, ergonomic — it fits your hand and your gun, precisely.

Key Features & Design

Built to last and designed for real-world use, this wrench clamps down squarely on stubborn fasteners; it won’t mar your firearm or slip mid-torque. The armorer’s hammer integration adds pure versatility to a single, world-class tool.

• Industry first torque wrench attachment location is optimally positioned to provide consistent torque for all nuts.
• Wrenches seat squarely for a no-slip fit on stubborn barrel nuts, castle nuts, muzzle brakes, or fixed stock receiver extensions.
• As a bonus, interchangeable hammer heads make the Armorer’s Master Wrench a “Master” hammer as well!
• This is the right tool for the job… and for you.
• Do It Yourself, Make It Your Own, With The World’s Most Advanced Armorer’s Wrench. We Call It The “Master” Wrench, You’ll Call It Genius.
• When it comes to using the Armorer’s Master Wrench, think precision. The ergonomic handle gives you the ability to apply serious torque needed to remove stubborn, crusted-on barrel or castle nuts without marring your firearm or stripping the nuts.
• The tool holds shape under pressure and has deep set sockets to grip your nuts and keep them gripped.
• The torque wrench attachment point allows you to apply accurate and critical torque adjustments to the barrel nuts, castle nuts, muzzle brakes, flash suppressors, and fixed stock receiver extensions.
• Plus, this is the only tool in the category to include a fully-functional, customizable armorer’s hammer in the same tool.
• Features:
  • Steel Hammer Head
  • Castle Nut Wrench
  • 1/2″ Torque Wrench Receiver
  • Ergonomic Handle
  • Brass Hammer Head
  • Nylon Hammer Head
  • Rubber Hammer Head
  • Torque Specs On Reverse Side
  • 5/8″ Fixed Stock Receiver Extension Wrench
  • 3/4″ Muzzle Brake Wrench
  • Mil-Spec Barrel Nut Wrench
  • Interchangeable Hammer Head Attachment Point
  • Free-Float Barrel Nut Wrench On The Reverse Side (Features 10 Posts For Best In Class Strength)