Harris No. 2A Adapter Round Flange Nut

The Harris No. 2A Adapter is a specialized 5/8-inch round head flange nut engineered to provide a robust mounting point for modern synthetic rifle stocks. This adapter is designed to offer maximum surface contact on the interior of the fore-end, preventing the sling swivel stud from loosening under the weight of a bipod. It is the reliable choice for ensuring your shooting platform remains stable on specialized or narrow synthetic platforms.

Key Specifications

• Flange Style: 5/8-inch round head flange nut for versatile internal seating.

• Compatibility: Specifically optimized for Ruger Model 77 Synthetic stocks.

• Attachment Type: Direct mount for standard 10-32 sling swivel studs.

• Material: Durable, heat-treated steel construction for long-term use.

• Finish: Corrosion-resistant black coating to match tactical hardware.

• Origin: Manufactured in the USA.

Benefits & Use Cases

The No. 2A is the go-to hardware for owners of the Ruger Model 77 Synthetic or similar rifles with narrow, contoured fore-ends where a standard rectangular flange might be too large to fit. Because synthetic stocks can be brittle or thin-walled, a standard screw-in stud can easily fail; the No. 2A provides the internal reinforcement required to handle the leverage applied by a bipod during field maneuvers.

This adapter is particularly useful for hunters who need a secure bipod mount that won't fail in extreme weather or high-recoil situations. The round flange design allows for a cleaner fit in compact fore-ends, providing a factory-quality finish that stays secure over time. If you need a permanent, high-strength mounting solution for your synthetic stock, the No. 2A delivers the stability you demand.