The Real Avid Master-Fit barrel nut wrench is a purpose-built crowfoot tool engineered for AR-15 free-float barrel nut installation and removal. It features titanium-coated stainless steel construction and tight tolerances to reduce slippage on MIL-SPEC assembly nuts. The tool accepts a 1/2″ drive to confidently deliver torque while fitting common barrel nut profiles.
Key Specifications
- The wrench size fits a 1-1/4″ free-float barrel nut.
- The drive is a 1/2″ crowfoot drive for use with standard torque handles and extensions.
- The construction is titanium-coated stainless steel for corrosion resistance and durable contact surfaces.
- The overall length is listed as 6.70 (per manufacturer data).
- The product dimensions are 0.70 x 4.70 x 6.70 (manufacturer-provided values).
- The handle description is Free-Float for compatibility with free-float barrel installations.
- Designed as an AR-15 accessory for MIL-SPEC assembly nuts.
- The design is a single-nut crowfoot intended for precise nut engagement during builds and maintenance.
Built to simplify assembly and maintenance tasks, the Master-Fit wrench reduces the need to adapt generic tools when working on AR-15 free-float systems. Its machined fit and durable finish help deliver consistent torque transfer and secure nut engagement during builds or field maintenance.





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