Cmmg Thread Adapter Ps90

The CMMG Thread Adapter PS90 is a precision muzzle device adapter engineered to convert the PS90's left-hand M12×1.0 barrel threads to industry-standard 1/2"-28 right-hand threading. This conversion enables PS90 short-barreled rifle (SBR) builds to accept the full spectrum of suppressor-ready muzzle devices, flash hiders, and compensators designed for 5.56 NATO and .223 Remington platforms.

The adapter threads directly onto the PS90's barrel without modification, establishing a secure mechanical interface between the left-hand proprietary threads and standard AR-pattern muzzle devices. The 1/2"-28 threading is the dominant standard across modern tactical suppressors and muzzle brakes, making this adapter the critical component for operators seeking to add sound signature control, flash reduction, or recoil management to short-barrel PS90 configurations. Weighing only 0.13 lbs, the adapter imposes minimal mass penalty while maintaining the rigid interface necessary for suppressor concentricity and zero shift stability.

This adapter solves a specific integration challenge for PS90 SBR owners: the FN PS90 platform's left-hand threaded muzzle—a legacy design inherited from its parent rifle—is incompatible with off-the-shelf muzzle devices. Operators building suppressed or precision short-barrel configurations rely on this adapter to unlock the ecosystem of commercial suppressors, compensators, and flash hiders that define modern carbine accessorization. CMMG's adapter is the standard solution across the precision rimfire and intermediate cartridge communities where PS90 suppressed builds require compliance-ready muzzle device options.