Rugged Suppressors OA005 3-Lug Adapter | 1/2-36 tpi

The Rugged Suppressors OA005 3-Lug Adapter provides a standardized H&K-pattern three-lug interface for mounting compatible suppressors to barrels with a 1/2″-36 tpi thread. It includes Rugged’s patented Go/No Go gauge to confirm proper attachment and reduce the risk of an improperly seated suppressor. The adapter is finished in black and built to 9mm HK specifications; it is not compatible with .45 ACP firearms.

Product Specifications

• The manufacturer is Rugged Suppressors.
• The model is 3 Lug Adapter.
• The manufacturer’s part number is OA005.
• The thread pattern is 1/2″-36 tpi.
• The fit is specified as 1/2X36.
• The color/finish is Black.
• Compatibility is built to 9mm HK spec and the adapter is not compatible with .45 ACP.
• The product includes Rugged’s patented Go/No Go Gauge for attachment confirmation.
• The overall length is 2.5000.
• The height is 1.4500.
• The width is 1.5500.
• The weight is listed as 1.0.
• The product type is Adaptor.
• Shipping restriction: NO DIRECT SHIP TO CALIFORNIA.
• The UPC is 859383006723.

Designed for users who need a repeatable, H&K-pattern mounting solution, the OA005 offers a clear mechanical check for correct installation and a compact footprint. It suits applications such as suppressed competition pistols and dedicated range/target setups where reliable, repeatable attachment is required. The adapter’s straightforward design and inclusion of the Go/No Go gauge make it a practical choice for shooters assembling or maintaining suppressor-capable pistols.