CMMGZEROED 556K
5.56mm / .223 suppressor · HUB 1.375x24 interface · specs and compatibility from the manufacturer
Notable features
- HUB Compatible
- Full-Auto Rated
- Sealed
length
5″
weight
11.8oz
MSRP
$649
length
5″
weight
11.8oz
calibers
5.56
material
Steel
interface
HUB 1.375x24
MSRP
$649
- Overall length
- 5″
- Class
- 5.56mm / .223
- n
- 328
- Range
- 2.5″–9.75″
- Median
- 6.12″
- Diameter
- 1.5″
- Weight
- 11.8 oz
- Material
- 17-4 Stainless Steel
- Finish / treatment
- Nitride
- Max caliber
- 5.56mm / .223
- Base interface
- HUB 1.375x24
- Front cap
- Fixed
- Backpressure
- Standard
- Full-auto rated
- Yes
- Maintenance
- Sealed (not user serviceable)
- MSRP
- $649
Shorter than most 5.56mm / .223 suppressors
Length compared against the 328 5.56mm / .223 suppressors in the catalog that publish one. Quartile basis; a value inside the middle half carries no note.
Prices are manufacturer's suggested retail (MSRP). What you pay may differ.
- Base interface
- HUB 1.375x24
- Front cap
- Fixed
The HUB 1.375x24 is an open standard: 415 mounts and 818 muzzle devices in our catalog fit this suppressor, including CMMG ZEROED HUB Adapter, AAC 51T S.T.A.M.P. Mount and AB Suppressor AB Raptor Adapter. You aren't locked into one manufacturer's parts.
Which ones fit your barrel and host?
Check in the BuilderManufacturer claim
- The suppressor uses a tubeless laser welded 17-4 stainless steel baffle design.
- The suppressor body is threaded 1.375″-24 HUB compatible, allowing use of third-party QD mounts and muzzle device systems.
- The front end cap is welded and features a 3/8 square drive, and included direct thread HUB mounts feature 7/8 wrench flats for easy removal with common tools.
- The nitride surface finish simplifies cleaning and allows use of nearly any solvent or an ultrasonic cleaner without concern for damage.
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- All ZEROED suppressors are designed and manufactured entirely in-house at CMMG's facility in Missouri, enabling quality control and affordability.
- Baffles are constructed from through-hardened 17-4 stainless steel with a nitride finish, chosen to resist corrosion and support full auto use.
- The ZEROED 556 carries a full auto rating, supporting approximately 240 rounds between cooldown periods.
- The ZEROED 556 is optimized for 5.56x45mm, .22 ARC, 4.6x30mm, and 5.7x28mm centerfire firearms.
- Each suppressor ships with one 1/2″-28 direct thread HUB mount and one 5/8″-24 direct thread HUB mount.
- Minimum barrel length is 10.5″ for 5.56mm and 5″ for 5.7x28mm.