Rugged Suppressors Obsidian 3-Lug Adapter – 9mm, 13.5×1 LH, Black

The Rugged Suppressors Obsidian 3-Lug Adapter (brand part no. OA004) converts a 13.5×1 left-hand threaded 9mm barrel to the 3-lug mounting standard, built to the 9mm HK spec and used in conjunction with OSS’s 3-Lug Mount. Rugged built the adapter with a patented Go/No-Go Gauge, giving a shooter a visual, physical confirmation that the suppressor is properly and fully attached before firing, for a surprise-free shooting experience instead of guessing at engagement. It’s made specifically to 9mm HK spec and is not compatible with .45 ACP hosts or mounts, so confirm your caliber and thread pattern before ordering. At 1.5 inches long and just 0.1 lb, it adds minimal length and weight to the muzzle. Finished in black, it’s part of Rugged’s Obsidian accessories line.

Key Specifications

• Converts to the 3-lug mounting standard.
• Features a patented Go/No-Go Gauge to confirm proper suppressor attachment.
• Gives a surprise-free confirmation before firing.
• Compatible with OSS’s 3-Lug Mount.
• Built to 9mm HK spec.
• Not compatible with .45 ACP hosts or mounts.
• Threaded 13.5×1 left-hand.
• Measures 1.5 inches long and weighs just 0.1 lb.
• Finished in black, part of Rugged’s Obsidian accessories line.

Frequently Asked Questions

How do I know my suppressor is fully attached? The patented Go/No-Go Gauge gives a visual, physical confirmation of proper attachment.

Does this work with .45 ACP? No, this adapter is built to 9mm HK spec and is not compatible with .45 ACP.

What thread pattern does it use? 13.5×1 left-hand.

Buy the Rugged Suppressors Obsidian 3-Lug Adapter – 9mm, 13.5×1 LH, Black

Get a visual confirmation your suppressor is properly seated before every shot. Order the Rugged Suppressors adapter from our Class 3 parts and accessories selection at our Lubbock, Texas gun shop for fast, direct shipping.