The CMMG DEFCAN 57 (brand part no. 57CA4AD) is a 5.7 x 28 mm suppressor built around a 1/2×28 thread mount. CMMG finishes the DEFCAN 57 in Black. The DEFCAN 57 favors shooters who want a reliable suppressor for their 5.7 x 28 mm host.

Key Specifications

• Rated in 5.7 x 28 mm for focused sound suppression.
• Threaded 1/2×28 for direct attachment to compatible muzzle devices.
• Finished in Black.
• Built from 17-4 stainless steel with a black nitride finish for corrosion resistance.

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? 5.7 x 28 mm.

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

Buy the CMMG DEFCAN 57 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.