Castle Nut for All AR Platforms

Castle Nut for All AR Platforms

The Castle Nut is an essential component for securing the buffer tube (receiver extension) to the lower receiver on all AR platforms, including AR-15, AR-10, and AR pistol builds. Built to mil-spec standards, this part ensures a secure and stable connection, preventing the buffer tube from loosening during extended use.

Manufactured from hardened steel and finished with a durable manganese phosphate coating, the castle nut resists corrosion, wear, and impact. The precision-machined notches are compatible with standard armorer’s wrenches, allowing for easy installation and proper staking.

Specifications:

• Material: Hardened steel
• Finish: Manganese phosphate
• Compatibility: AR-15, AR-10, AR pistols
• Tool Interface: Standard armorer’s wrench notches