Meet the Magpul Armorer's Wrench – AR15/M4: an American-made, solid steel tool designed for AR builds, field maintenance, and every twist of the wrench you’ll ever need. It’s comfortable to grip, built to last, and ready to tackle stock and pin-style barrel nuts with ease—with a little humor baked in for good measure.

Key Features & Design

• Platform: AR15, M4, M16
• Material & Finish: solid steel, heat-treated with manganese phosphate finish; American-made with US steel
• Weight & Dimensions: Weight 1.1 lb; Length, Maximum 11.7 in; Handle Thickness 0.35 in
• Functionality: Engages both stock and pin-style barrel nuts; fits standard sized flash hiders; installs and removes rifle receiver extensions and carbine castle nuts; extended teeth for ASAP® plates
• Inclusions: Includes two hammer faces
• Torque Compatibility: Works with a 1/2" torque wrench; USGI torque spec references are included on the tool for quick reference
• Extra Perk: Convenient Bottle Opener for refreshments after the build (fits both Metric and SAE bottle caps)

SPECIFICATIONS

• Platform: AR15, M4, M16
• Weight: 1.1 lb
• Length, Maximum: 11.7 in
• Handle Thickness: 0.35 in

COMPATIBILITY

• USGI barrel nut wrench
• Free-float tube barrel nut wrench
• 1/2" torque wrench/breaker bar interface
• Armorer's hammer
• USGI castle nut wrench* (usable with aftermarket end plates such as the ASAP® and ASAP-QD)
• 3/4" wrench for most flash hiders/muzzle brakes

Note: Not compatible with larger diameter pistol-style receiver extension tubes.

Whether you’re building, maintaining, or upgrading your AR platform, this tool delivers reliability, clear torque references, and a touch of practicality with a built-in bottle opener. Made in the USA, it’s a solid, trustworthy choice for armorers and enthusiasts who value quality and performance.