The Otter Creek Labs Hydrogen K (brand part no. HYDK762) is a compact 5-inch suppressor rated for .308/7.62 NATO, threaded 5/8-24 for direct attachment. Finished in black, the Hydrogen K favors shooters who want a short, low-profile can for .308-class rifles.

Key Specifications

• Rated for .308/7.62 NATO.
• Measures 5 inches long.
• Threaded 5/8-24 for direct attachment.
• Finished in black.

Frequently Asked Questions

Is this an NFA item? Yes. As a suppressor, it's a Title II firearm requiring an approved ATF Form 4 and transfer through an NFA-licensed dealer.

How long is it? 5 inches.

How does it mount? A 5/8-24 threaded direct-mount system, not a quick-detach mount.

Buy the Otter Creek Labs Hydrogen K Suppressor

This is a Title II item regulated under the National Firearms Act. Purchase requires an approved ATF Form 4, no federal transfer tax, and transfer through a licensed NFA (SOT/Class 3) dealer, with an extended federal approval wait before delivery. Order through Otter Creek Labs‘s silencers and suppressed firearms lineup and our Lubbock, Texas team will walk you through the transfer process.