The CMMG Zeroed 556K is a compact suppressor built for range use, training, and hearing protection during live-fire sessions. It uses heat-treated 17-4 stainless construction with a nitride finish for corrosion and fouling resistance. The unit ships with direct thread HUB mounts to provide multiple mounting options for compatible firearms.

Key Specifications

• The overall length is 5.5 inches.
• The length without the mount measures 5.2 inches.
• The weight is 13.5 ounces with mount and 11 ounces without mount.
• The outside diameter is 1.58 inches.
• The construction material is heat-treated 17-4 stainless steel.
• The finish is black nitride.
• Included mounts are 1/2-28 direct thread and 5/8-24 direct thread HUB mounts.
• The suppressor is HUB compatible and uses direct thread attachment options.
• Manufacturer notes list a .224-inch bore diameter.
• This model is reported as full-auto rated by the manufacturer.

Compact and serviceable, the Zeroed 556K combines durable stainless construction and a corrosion-resistant nitride finish with a small K-size footprint for minimal added length and weight. Its included direct-thread HUB mounts provide mounting flexibility for a range of host platforms that accept the listed thread options, making it suitable for range work, training, and general-purpose use where a compact suppressor is preferred.