The Yankee Hill Machine (YHM) Forearm Wrench is a dedicated tool for installing and removing YHM forearms on AR-15 style rifles. It incorporates a tool for tightening the barrel nut and a spanner wrench for securing the jam nut, streamlining forearm maintenance and installation tasks. Constructed for shop or armorers bench use, the wrench is designed to fit YHM barrel nut interfaces.
Key Specifications
- Overall dimensions are 1.45 X 2.75 X 8.60.
- The listed height is 1.4500.
- The listed width is 2.7500.
- The listed length is 8.6000.
- Material of construction is STEEL.
- Finish on the tool is black oxide plated.
- Designed to fit: FITS YHM BARREL NUTS.
- Color/identification is listed as FOREARM WRENCH.
- AR-15 accessory designation: Yes.
- Weight is listed as 1.
This wrench simplifies forearm installation and service by combining multiple functions—barrel nut tightening and jam nut spanner—into a single hardened-steel tool. Its black oxide finish helps resist surface corrosion while providing a durable working surface appropriate for regular gunsmithing and maintenance tasks. For armorers and owners working with YHM forearms, this tool offers a straightforward, purpose-built option to keep installations consistent and secure.
This description was generated with AI and may contain errors. Verify specifications and legal restrictions with the manufacturer before purchase. Provided “as-is” without warranties or guarantees.




