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Otter Creek Labs
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.
| Caliber | 7.62 |
| Thread Size | 5/8x24 |
| Length (no mount) | 5 inches |
| Weight (no mount) | 6.7 ounces |
| Outer Diameter | 1.625 inches |
| Material | Grade 5 titanium |
| Design | Tubeless |
| Rear Thread Standard | 1.375"-24 TPI |
| Rating | Full-auto (keep under 800° F) |
| Sound Reduction | 142 dB (16" .308 with BK 2209 powder) |
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.
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.
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.
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.
Otter Creek Labs
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.
| Caliber | 7.62 |
| Thread Size | 5/8x24 |
| Length (no mount) | 5 inches |
| Weight (no mount) | 6.7 ounces |
| Outer Diameter | 1.625 inches |
| Material | Grade 5 titanium |
| Design | Tubeless |
| Rear Thread Standard | 1.375"-24 TPI |
| Rating | Full-auto (keep under 800° F) |
| Sound Reduction | 142 dB (16" .308 with BK 2209 powder) |
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.
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.
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.
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.
