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Why customers choose this item
✓7075-T6 billet aluminum body
✓Type III hardcoat anodized
✓Mil spec buffer tube fit
✓Weight 0.2 ounces total
✓Requires stock wrench install
✓Black anodized finish
Product highlights
Castle nut designed for AR platform buffer tube assemblies
Constructed from aircraft grade 7075-T6 aluminum for strength and durability
Weighs approximately 0.2 ounces for lightweight build optimization
Type III hardcoat anodized finish enhances wear and corrosion resistance
Compatible with standard mil spec buffer tubes for secure installation
Requires standard stock wrench tool for proper installation
Product description
The Fortis Manufacturing, Inc. Castle Nut is a rifle castle nut designed for securing the buffer tube on AR-15 platforms.
The Fortis Manufacturing, Inc. Castle Nut is machined from aircraft grade 7075-T6 aluminum and features a Type III hardcoat anodized black finish. This AR-15 castle nut weighs 0.2 ounces and is designed to fit mil-spec buffer tubes. It requires a standard stock wrench for installation and is manufactured in the USA. This product is used for retaining the receiver extension in place during assembly. In standard configurations, this rifle castle nut provides a consistent interface with AR-15 lower receivers and buffer systems. The lightweight construction supports builds where reduced component weight is required without altering compatibility.
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Volume pricing, dedicated account management, ACH payment options, and special sourcing for businesses, agencies, law enforcement, and first responders.