Rugged Suppressors 3 Lug Adapter | 5/8×24 | OA006

The Rugged Suppressors Obsidian9 3 Lug Adapter (MFG# OA006) is a dedicated adapter engineered for 9mm HK-spec barrels. It provides a secure 3-lug interface with a 5/8×24 tpi thread pattern and is intended for use with compatible 3-lug mounts. The adapter features a patented Go/No Go gauge to confirm proper attachment and avoid surprises during use. This part is not compatible with .45 ACP and is specifically sized for 9mm applications.

Product Specifications

• The manufacturer is Rugged Suppressors.
• The model is 3 Lug Adapter (Obsidian9).
• The manufacturer part number is OA006.
• The thread pattern is 5/8×24 tpi.
• The caliber is specified as 9mm.
• The fit is listed as HK.
• The product type is Adaptor.
• The subcategory is Muzzle Devices.
• The color is Black.
• The weight is 0.129.
• The dimensions are 1.55 x 1.45 x 2.55.
• The length is 2.5500.
• The width is 1.4500.
• The height is 1.5500.
• The UPC is 859383006730.

This adapter is useful for suppressed range training and for maintenance or upgrade work on HK-pattern pistols that accept 3-lug mounts. Its Go/No Go gauge provides a simple verification of a correct mount, and the adapter is intended to be used in conjunction with OSS-style 3-lug mounts designed for Obsidian9 systems.

Durable machining and precise tolerances make this adapter a practical choice for shooters maintaining a suppressed 9mm HK setup. Its focused design and clear compatibility notes simplify integration into existing HK-pattern platforms and suppressor assemblies.

Users commonly praise its precise fit and durable construction.

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