The CMMG PS90 Thread Adapter gives owners of the FN PS90 access to the broad selection of muzzle devices and suppressor mounts built around the standard 1/2x28 thread pattern. CMMG designed this adapter to convert the PS90 barrel’s M12x1.0 left-hand muzzle interface to 1/2x28, providing a practical bridge between the distinctive PS90 platform and a much more widely supported muzzle-device standard.

This is an especially logical companion for the CMMG 10.4-inch PS90 barrel. A registered PS90 short-barreled rifle can be configured with a compatible flash hider, compensator, direct-thread suppressor or quick-detach suppressor mount without being limited to muzzle devices made specifically for the original M12x1.0 LH interface.

The advantage is flexibility. Owners can select a muzzle device that matches the rifle’s intended role, change mounting systems later and build around suppressor hardware they may already own. For the PS90 enthusiast who wants the compact dimensions of a properly registered SBR together with a familiar American muzzle thread, the CMMG 57DA53A is the purpose-built solution.

CMMG backs this thread adapter with its Lifetime Quality Guarantee. Always confirm the bore diameter, caliber rating, shoulder engagement, alignment and installation requirements of the intended muzzle device or suppressor mount before firing. Matching thread dimensions alone do not establish safe compatibility.

Complete your FN PS90 setup at Huckleberry Arms:

CMMG 10.4" PS90 Barrel | FN America PS90 5.7x28mm Rifle | Muzzle Devices | 5.7x28mm Rifle Ammunition