The JK Armament 155 hub piston mount is a precision component designed for shooters building or maintaining 45-caliber suppressor systems. This mount interfaces with .578"×28 thread patterns—a standard configuration for dedicated 45 ACP suppressors and host firearms—and combines aluminum and stainless steel construction with a nitride finish for durability in the field or at the range. Whether you're assembling a custom suppressor setup or replacing a worn piston assembly, this hub mount delivers the mechanical accuracy you need for reliable sound signature and back-pressure management.

Built from materials chosen for corrosion resistance and longevity, the nitride finish protects against moisture and fouling, so your suppressor system stays in service through regular use. The .578"×28 specification is straightforward: confirm your host firearm or suppressor body is threaded to this standard before ordering, as piston mounts are not interchangeable across different thread patterns.

JK Armament components are manufactured to exacting tolerances. This hub piston mount supports precision assembly and is compatible with 45-caliber suppressor builds where the host firearm or suppressor body features the .578"×28 mounting thread. If you're new to suppressor maintenance or assembly, verify your system's thread pitch and diameter before purchase—choosing the correct size ensures proper fit and optimal performance.

The JK Armament 155 hub piston mount is a precision component designed for shooters building or maintaining 45-caliber suppressor systems. This mount interfaces with .578"×28 thread patterns—a standard configuration for dedicated 45 ACP suppressors and host firearms—and combines aluminum and stainless steel construction with a nitride finish for durability in the field or at the range. Whether you're assembling a custom suppressor setup or replacing a worn piston assembly, this hub mount delivers the mechanical accuracy you need for reliable sound signature and back-pressure management.

Built from materials chosen for corrosion resistance and longevity, the nitride finish protects against moisture and fouling, so your suppressor system stays in service through regular use. The .578"×28 specification is straightforward: confirm your host firearm or suppressor body is threaded to this standard before ordering, as piston mounts are not interchangeable across different thread patterns.

JK Armament components are manufactured to exacting tolerances. This hub piston mount supports precision assembly and is compatible with 45-caliber suppressor builds where the host firearm or suppressor body features the .578"×28 mounting thread. If you're new to suppressor maintenance or assembly, verify your system's thread pitch and diameter before purchase—choosing the correct size ensures proper fit and optimal performance.