CMMG Defcan 556 Suppressor, 5.56, Direct Thread, Black

The CMMG Defcan 556 Suppressor (brand part no. 55CA42D) is a full-auto-duty-rated 5.56mm suppressor that combines robust build quality with strong sound reduction. CMMG uses 3D metal-printed Inconel construction for durability and high heat tolerance, and it ships with a 1/2×28 muzzle brake plus a 1-3/8×24 direct-thread mount.

Key Specifications

• Rated for 5.56-class cartridges.
• Rated for full-auto duty cycles for high heat tolerance.
• Built from 3D metal-printed Inconel.
• Threaded 1-3/8×24 for direct-thread mounting.
• Includes a 1/2×28 muzzle brake.

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? 5.56-class cartridges.

Is it rated for full-auto use? Yes, it’s rated for full-auto duty cycles for high heat tolerance.

Buy the CMMG Defcan 556 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.