“Does the PS90 come with a threaded barrel?”
Come with ? No. Is it possible to get it done ? Sure thing !
Any can that is rated for .22 rimfire is NOT going to like the magnificent power of the 5.7 round. If you have a 5.7 you don’t need a tactical flashlight. The muzzle flash will light the area.
Those pressures are nothing to underestimate.
The Silencerco Sparrow is rated for 5.7.