The CMMG Zeroed 556K Suppressor (brand part no. 11DB015) is a dedicated 5.56mm suppressor built to deliver strong sound suppression in a compact package, with a direct-thread mount and an overall length of just 5.5 inches. CMMG constructs the Zeroed 556K from full 17-4 stainless steel with a nitride finish that resists fouling and corrosion.

Key Specifications

• Rated for 5.56mm-class cartridges.
• Measures 5.5 inches overall in its compact K-size footprint.
• Built from 17-4 stainless steel with a nitride finish.
• Uses a direct thread mount.
• Threaded 1/2×28 for mounting.

Frequently Asked Questions

Is this an NFA item? Yes. As a suppressor, it’s a Title II firearm requiring an approved ATF Form 4 and transfer through an NFA-licensed dealer.

What caliber is it rated for? 5.56mm-class cartridges.

How long is it? 5.5 inches overall.

Buy the CMMG Zeroed 556K Suppressor

This is a Title II item regulated under the National Firearms Act. Purchase requires an approved ATF Form 4, no federal transfer tax, and transfer through a licensed NFA (SOT/Class 3) dealer, with an extended federal approval wait before delivery. Order through CMMG‘s silencers and suppressed firearms lineup and our Lubbock, Texas team will walk you through the transfer process.