FIND IT HERE! https://doublemdefense.com/product/rugged-suppressor-3-lug-adapter-obsidian-accessoies-1-2-28-tpi-black/ 

We accept trade-ins!

Factory New.

UPC: 859383006709
SKU: OA003

Item Description:

The 3 Lug Adapter features the patented Go/No Go Gauge. The No Go/Go Gauge provides confirmation that your suppressor is properly attached, for a surprise free shooting experience. The 3 Lug Adapter is compatible and used in conjunction with OSS’s 3 Lug Mount. This 3 Lug Adapter is made to 9mm HK spec and is not compatible with 45ACP.

Item Specifications:

Brand Rugged Suppressor
Category Brakes & Compensators
Caliber 9mm Luger
Model Obsidian
Series 3 Lug Adapter
Color Black
Firearm Fit HK
Thread Pattern 1 / 2″-28 tpi