Otter Creek Labs Hydrogen K - Silencer 5/8X24 7.62 Black

The Otter Creek Labs Hydrogen K is a lightweight 7.62 suppressor engineered for shooters and hunters who refuse to compromise on performance for the sake of portability. Built from grade 5 titanium in a tubeless design, this 5/8x24 threaded silencer delivers serious sound reduction without the weight penalty typical of traditional suppressors. At just 6.7 ounces, it's at home on everything from precision rifle platforms to short-barrel 300 Blackout rigs—the kind of suppressor that makes sense when every ounce matters on a hunt or during extended range sessions.

The Hydrogen K's distinctive architecture removes unnecessary material while maintaining structural integrity, a philosophy that yields about 10% more surface area than conventional designs. That extra surface area translates to faster heat shedding and quicker cool-down cycles—a real benefit when you're running drills or pushing through a long day at the range. The suppressor carries a full-auto rating, so it'll handle whatever you're putting through it, provided you keep it under 800 degrees. At 1.625 inches in diameter and 5 inches long (without a mounting system), it won't bloat your rifle's profile.

Otter Creek Labs equipped the Hydrogen K with industry-standard 1.375-inch by 24 TPI rear threads, giving you complete flexibility in mounting options. The package includes a direct-thread 5/8x24 adapter for straightforward installation, plus a tube clamp if you prefer a quick-detach system. You'll also get a spec sheet and instruction pamphlet to walk you through setup and maintenance.

Key Features

• Grade 5 titanium construction—lightweight, durable, and built to shed heat efficiently
• Tubeless design optimizes surface area for superior sound suppression and cooling
• Full-auto rated for versatility across different shooting applications
• Industry-standard rear threads for broad mounting system compatibility
• Direct-thread 5/8x24 adapter included for immediate use
• Minimal footprint (5" length, 1.625" OD) keeps your rifle balanced and handy

Specifications

Frequently Asked Questions

What mounting options work with the Hydrogen K?

The Hydrogen K uses industry-standard 1.375"-24 TPI rear threads, so you can select from any suppressor mount system that fits that spec. Otter Creek Labs includes a direct-thread 5/8x24 adapter and a tube clamp for quick-detach mounting if you prefer that route.

Is this suppressor suitable for .308 or other full-power rifle rounds?

Yes. The Hydrogen K is rated for 7.62 caliber and carries a full-auto rating, making it suitable for .308 Winchester and other 7.62 NATO applications. Keep the suppressor under 800 degrees Fahrenheit during operation.

What's included in the box?

Each Hydrogen K comes with the suppressor itself, a direct-thread 5/8x24 adapter, a tube clamp for mounting options, instruction and specs pamphlet, and Otter Creek Labs stickers.

How much does the Hydrogen K weigh?

The Hydrogen K weighs just 6.7 ounces (without a mount), making it one of the lightest options in its class for hunters and shooters building ultra-light rigs.