OCL Hydrogen L Suppressor | 6.5 Creedmoor | 5/8×24 | HYDL65

The Otter Creek Labs Hydrogen L (MFG# HYDL65) is a tubeless titanium suppressor designed for 6.5 Creedmoor applications. It prioritizes low weight and increased surface area to shed heat faster and cool more quickly while remaining serviceable for precision and hunting use. The unit ships with a 5/8×24 direct-thread adapter and a tube clamp for mounting options that fit a range of muzzle systems.

Product Specifications

• The manufacturer is Otter Creek Labs (OCL).
• The model is Hydrogen L.
• The manufacturer part number is HYDL65.
• The caliber is listed as 6.5 Creedmoor.
• The material is Grade 5 titanium.
• The finish is Cerakote in Black Nitride.
• The overall length (no mount) is 9 inches.
• The outside diameter is 1.625 inches.
• The weight (no mount) is 11.9 ounces.
• The standard thread pattern supplied is a 5/8×24 direct-thread adapter.
• The suppressor features a universal rear thread interface of 1.375×24 for mounting system compatibility.
• The product is marked as Full-auto rated: Yes with the manufacturer’s temperature guidance to keep the unit under 800 degrees.
• Included in the box are a suppressor, stickers, instruction/specs pamphlet, a 5/8×24 direct-thread adapter, and a tube clamp.
• The UPC for this product is 664533653999.

With a focus on reduced mass and improved thermal surface area, the Hydrogen L suits precision rifle matches (PRS-style) and long-range hunting setups where minimizing added weight and heat retention matters. Its tubeless titanium construction keeps weight low while providing compatibility with common mounting systems via the supplied adapter.

Users commonly praise the Hydrogen L for its lightweight construction and quiet operation.