The CMMG DefCan 9 Gen 2 (CMMG part no. 99CA47D) is a 9mm suppressor built from stainless steel and aluminum and rated for full-auto use, purpose-built as a dedicated sub-gun can. CMMG threads the DefCan 9 in a standard 1/2×28 pattern for direct attachment to compatible pistol-caliber hosts. The DefCan 9 favors shooters running sub-guns or 9mm carbines who want a suppressor rated for sustained, high-volume fire.

Key Specifications

• Rated for 9mm ammunition.
• Threaded 1/2×28 for direct attachment to compatible muzzle devices.
• Built from stainless steel and aluminum construction.
• Rated for full-auto use, suited to sustained sub-gun fire.

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.

Is it rated for full-auto fire? Yes, the DefCan 9 is rated for full-auto use on compatible sub-gun platforms.

How does it mount? A 1/2×28 threaded direct-mount system, not a quick-detach mount.

Buy the CMMG DefCan 9 Gen 2 9mm 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.