CMMG DEFCAN-556 | 5.56 Suppressor | 1/2-28 Included

The CMMG DEFCAN-556 is a full-auto-rated 5.56mm/.223 suppressor designed for robust service life and consistent performance. It is manufactured using 3D metal printing processes and is engineered to attach over an included muzzle device for rapid installation. The unit is HUB-compatible (1-3/8×24) and ships with a ZEROED SVD muzzle brake that threads 1/2-28 for the muzzle device.

Common applications include range training and precision/practical rifle shooting where reduced report and shooter comfort are priorities. The DEFCAN-556 supports quick mount changes through the industry-standard HUB interface for users who may switch muzzle devices or QD mounts.

Product Specifications

• The model is DEFCAN 556.
• The manufacturer is CMMG.
• The caliber listing is .223 REM/5.56 NATO.
• The finish is listed as Cerakote.
• The color is Black.
• The product type is Suppressor.
• The unit is described as full-auto-rated for 5.56mm.
• The included muzzle device is a ZEROED SVD Muzzle Brake (1/2-28).
• The muzzle device thread is 1/2-28.
• The suppressor uses the industry-standard HUB thread of 1-3/8×24 for modular mounts.
• The listed weight is 19.8 oz.
• The listed overall length is 7.8 inches.
• The package includes muzzle device shims and thread locker.
• The accessories field lists Zeroed SV Muzzle Brake.
• The UPC is 810103479876.

The DEFCAN-556 is built for users who value dependable, service-rated sound reduction and straightforward attachment options. Its HUB compatibility and included brake make it simple to integrate into an existing 5.56/.223 rifle setup for range work or competition. The design emphasizes modularity and field-serviceable mounting for shooters who rotate muzzle devices or mounts.