CMMG's PS90 Thread Adapter is best used with a short barrel on your PS90 SBR build. It adapts the standard M12 x 1.0 LH threads of the PS90 to 1/2"-28 and is compatible with most 5.56/.223 muzzle devices.
|Size||223 Remington/5.56 NATO|
|Thread Pattern||1/2"-28 tpi|
Determined at checkout.