The Primary Weapons Systems PUB-A mount enables quick and concentric attachment of HUB compatible suppressors to PWS FRC compensators and other compatible muzzle devices with 1.375-28 threading.Primary Weapons Systems PUB-A Suppressor MountHUB compatible suppressor interface1.375-28 thread specificationDirect compatibility with PWS FRC compensatorsWorks with muzzle devices from Rearden MFG Q LLC and other manufacturersCerakote finish in blackMaintains suppressor concentricity for optimal performanceThis mount system allows users to easily swap suppressors between multiple host firearms while ensuring proper alignment and consistent performance across different platforms.