Harris No. 2R Adapter Radius Flange Nut

The Harris No. 2R Adapter features a unique radiused flange designed specifically for mounting to wood or polymer fore-ends with curved internal profiles. By matching the 3/4-inch internal radius of your rifle’s fore-end, this adapter provides a flush, secure fit that standard flat-backed hardware cannot achieve. It is the ideal solution for adding a stable bipod attachment point to specialized rifles without compromising their structural integrity.

Key Specifications

• Flange Style: Radiused flange with a 3/4-inch radius to match curved stock interiors.

• Compatibility: Designed for wood or polymer fore-ends, including those sitting beneath gas tubes.

• Material: High-quality, heat-treated steel for maximum durability.

• Fitment: Ideal for Ruger M77 wood stocks, Mini-14 variants, and similar rounded profiles.

• Interface: Provides a standard swivel stud for bipod and sling attachment.

• Origin: Made in the USA.

Benefits & Use Cases

The No. 2R is a specialized problem-solver for rifles with unconventional fore-end geometry. It is frequently used on Mini-14 models where the mounting point must be located under a gas tube, or on classic wood stocks with deep, rounded barrel channels. The 3/4-inch radius ensures that the flange seats perfectly against the stock material, preventing hardware movement and ensuring that the exterior stud remains perfectly vertical.

This adapter is perfect for shooters who want to maintain the traditional look of a wood stock while gaining the performance benefits of a modern Harris bipod. It eliminates the need for bulky external clamps, providing a clean, low-profile interface that stays secure even under heavy use. Whether you are a target shooter or a traditional hunter, the No. 2R provides the precision-fit hardware required for a professional-grade shooting platform.