Sidewinder M2 45 - 9mm piston?

New to suppressors, decided to go with a YHM Sidewinder m2 .45 for my 9mm g19.

I’ve done some research and heard that I may need a spring compatible with 9mm to run the suppressor properly, but looking online I can only find the 9mm sidewinder (which is apparently superseded by the .45 and no longer supported?)

Where/do I need to get myself a 9mm conversion piston/spring? Emphasis on the do I need one.