Cmmg Zeroed Hub Mnt Dt .578x28 Blk

The CMMG Zeroed Hub Mount, Direct Thread .578x28 in black nitride finish is a precision muzzle device mounting solution engineered for shooters who demand rock-solid accuracy and repeatable zero shifts. This hub mount serves as the interface between direct-threaded suppressors, compensators, or other muzzle devices and your firearm's barrel, converting the .578x28 thread pitch to a standardized 1.375x24 hub connection. Whether you're building a precision rifle, a duty carbine, or a competition platform, this mount ensures your muzzle devices—and your point-of-impact—remain consistent across repeated installations and removals.

Manufactured by CMMG with a durable nitride finish, the Zeroed Hub Mount withstands the corrosive environment of repeated firing and cleaning cycles while maintaining the tight tolerances critical to zero retention. The .578x28 direct-thread input accommodates barrels with that specific bore diameter and pitch—common in AR-pattern rifles and precision bolt guns—while the 1.375x24 hub output provides compatibility with industry-standard muzzle device attachments. The compact 2 x 1 x 2 inch profile and 0.13 lb weight ensure minimal impact on rifle balance and handling. This engineering approach eliminates the micro-movements that cause point-of-aim drift, a persistent problem with traditional crush-pin or end-cap systems.

Tactical shooters, precision rifle competitors, and gunsmiths benefit most from the repeatability this hub mount delivers—especially when rotating suppressors or testing different muzzle devices without re-zeroing. Installation requires careful alignment of the .578x28 threads to the barrel and secure fastening at the 1.375x24 hub end, typically using appropriate shims and lock rings to achieve zero-shift performance. Verify your barrel's thread pitch and hub diameter specifications before ordering to ensure seamless integration with your existing muzzle device ecosystem.