Otter Creek Labs Hydrogen S - Silencer 5/8X24 7.62 Black
The Otter Creek Labs Hydrogen S is a lightweight suppressor engineered for hunters and precision rifle shooters who refuse to compromise on performance or weight. Built from grade 5 titanium in a tubeless design, this 5/8x24-threaded can delivers genuine suppression without turning your rifle into a lead sled. At just 9.3 ounces and 7 inches long (without mount), the Hydrogen S cuts heat faster than heavier designs—a real advantage on back-to-back shots or extended shooting sessions.
The Hydrogen S achieves this lightweight profile through intentional external weight reduction that removes unnecessary material while maintaining structural integrity. The result is a suppressor with 10% more surface area than competing designs of similar size, allowing it to shed and dissipate heat more efficiently. This design philosophy makes the Hydrogen S equally at home on a short-barrel 300 Blackout hunting rig, a match rifle on the range, or an AR-15 running drills—and it carries a full-auto rating so long as you keep operating temperatures under 800 degrees.
Versatility is built in. The universal 1.375x24 rear threads let you choose your own mounting system rather than locking you into one proprietary solution. The package includes a 5/8x24 direct-thread adapter, tube clamp for aftermarket mounts, instruction pamphlet with specs, and stickers. Whether you're suppressing a bolt-action 308 Winchester or an intermediate rifle, the Hydrogen S delivers 137 dB of measured suppression—real-world quiet that respects your hearing and your hunting partners.
Key Features
- Grade 5 titanium construction with tubeless design for maximum durability and minimum weight
- 9.3 ounces—one of the lightest full-auto-rated suppressors in its class
- 10% more surface area than comparable suppressors for faster heat dissipation and cooler operation
- Universal 1.375x24 rear threads for choice of mounting systems
- Includes direct-thread adapter (5/8x24) and tube clamp for flexible mounting
- Full-auto rated with 800-degree operating temperature limit
- Proven performance on hunting and precision rifle platforms
Specifications
| Suppressor Model | Otter Creek Labs Hydrogen S |
| Mounting Thread | 5/8x24 direct thread (rear universal 1.375x24) |
| Caliber Compatibility | 7.62 (.308) |
| Length (no mount) | 7 inches |
| Weight (no mount) | 9.3 ounces |
| Outside Diameter | 1.625 inches |
| Material | Grade 5 titanium |
| Design | Tubeless |
| Sound Reduction | 137 dB (measured on 16-inch .308 with Black Hills 220-grain ammunition) |
| Auto Rating | Yes (800-degree operating limit) |
| Color | Black |
Frequently Asked Questions
What comes in the box with the Hydrogen S?
The suppressor ships with a 5/8x24 direct-thread adapter, tube clamp for mounting systems, instruction and specifications pamphlet, stickers, and the suppressor itself. You have the direct-thread option ready to go, plus the flexibility to add other mounting solutions if you prefer.
Can I use the Hydrogen S on multiple rifles or calibers?
The Hydrogen S is rated for 7.62 (.308) and features universal 1.375x24 rear threads, so you can move it between .308-compatible rifles. The direct-thread adapter is 5/8x24. Always confirm your rifle's thread pitch before attachment.
How much does the Hydrogen S weigh, and why does weight matter on a suppressor?
At 9.3 ounces without a mount, the Hydrogen S is exceptionally light, which matters because it minimizes the weight penalty on your rifle—especially critical on hunting rigs and ultralight builds. The lightweight design also allows faster heat dissipation, so the suppressor cools quicker between shots and maintains performance under sustained fire.
Is the Hydrogen S rated for full-auto fire?
Yes, the Hydrogen S carries a full-auto rating, provided you keep operating temperatures below 800 degrees. This full-auto certification also ensures robust performance under demanding semi-auto hunting and range conditions.