Yankee Hill YHM HD 3-Lug Adapter | 1-3/8-24 | Matte Black

The Yankee Hill Machine HD 3-Lug Adapter is a heavy-duty quick-attach mounting option for 3-lug, HUB-compatible suppressor interfaces using the HK tri-lug pattern. The assembly includes a machined mounting interface and a closed hub design intended to improve longevity under repeated use. It is offered in a matte black finish and ships with the required wrenching features for installation.

Product Specifications

• The fit is 1-3/8-24 (1.375×24).
• The model designation is 3-Lug / HD 3-Lug Adapter.
• The construction uses Aluminum and 17-4 Stainless Steel components as described by the manufacturer text.
• The surface treatment or coating is listed as Melonite / Black Oxide in product details.
• The finish is specified as Matte Black.
• The adapter is HUB compatible and uses the HK tri-lug interface.
• Included wrenching features are a 3/4″ open ended wrench and a 1/2″ torque wrench interface.
• The product is described as capable of handling heavy use including full-auto platforms in the manufacturer text.
• The adapter is noted as compatible with specific suppressor models such as R9 and Nitro N20 in the product description.
• The package weight is listed as 0.4 lb and package dimensions are provided in vendor data.
• The color is listed as Black.
• The item type is Mount and subcategory is Suppressor Accessories.
• Additional feature notes include Fits 1-3/8″x24 tubes and 3-Lug suppressor mount.
• The UPC is 841812101673.

This HD 3-Lug Adapter is intended for users who need a durable, quick-attach hub interface with improved longevity over standard mounts. Its enclosed hub design and stainless/aluminum components make it a practical upgrade for shooters using tri-lug suppressor systems and HUB-compatible accessories, especially where repeated attachment and removal are expected.