The Real Avid AVMF1116BNW Master-Fit barrel nut wrench is a purpose-built crowfoot tool designed for AR-platform free-float barrel nut installation and removal. It uses a 1/2 inch drive crowfoot design to deliver torque to common MIL‑SPEC assembly nuts without adapting generic wrenches. Titanium-coated stainless steel construction and tight tolerances provide durable, no-slip engagement for riflesmithing tasks. The free-float handle profile offers controlled leverage for professional and home builds.
Key Specifications
- Drive interface: 1/2 inch drive crowfoot.
- Overall dimensions: 0.70 X 4.75 X 6.70.
- Height: 0.7000.
- Width: 4.7500.
- Length: 6.7000.
- Material: TITANIUM COATED STAINLESS STEL.
- AR-15 compatibility: Yes.
- Other features: TORQ WRENCH.
- Finish style: SINGLE NUT WRENCH.
- Handle description: Free-Float.
Engineered for armorers and builders, the Master-Fit wrench matches MIL‑SPEC nut profiles to reduce fitting errors and speed assembly. Its coated stainless construction stands up to shop use while the crowfoot design keeps torque delivery precise and repeatable for consistent results.





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