Yankee Hill YHM HD 3-Lug Adapter 1.375X24 Matte Black

The YHM HD 3-Lug Adapter is a quick-attach mounting solution designed to increase durability and service life for 3-lug equipped systems. The assembly features a mounting interface machined from 17-4 stainless steel and a fully enclosed design intended to withstand frequent use. It uses the HK tri-lug interface and is HUB-compatible, replacing any 1-3/8″-24 style mount. The adapter is offered in a matte black finish and is presented as a heavy-duty option for demanding use.

Key Specifications

• Built by Yankee Hill Machine.
• Model designation is YHM HD 3-Lug Adapter.
• Fit is specified as 1.375X24.
• Mounting interface is machined from 17-4 Stainless Steel.
• Compatible with the HK tri-lug interface and is HUB compatible.
• Advertised as swappable onto R9 and Nitro N20 sound suppressors.
• Finish is listed as Matte with color Black.
• Package dimensions are 2.15 X 5.20 X 8.10.
• Listed weight is 0.4.

This heavy-duty adapter is a straightforward, practical upgrade for users seeking a robust quick-attach mount. Its enclosed design and stainless mounting interface emphasize longevity under repeated use, and HK tri-lug/HUB compatibility makes it a versatile choice for matching with compatible mounts and suppressors.