If it was me, I’d buy a 5/8-24 piston and a fixed barrel spacer.
There’s no “quick” way to do it because you have to get rid of the spring when swapping to the carbine. Might as well change the piston at the same time instead of using an adapter. I prefer the piston/FBS instead of the fixed mount because it keeps the booster cage cleaner.
Thank you. If I have a 9mm 1/2 by 28 pistol can,
And swapped it to a 9mm1/2 by 28 9mm Carbine with no change to the piston, what issues would I run into? I know there would be no benefit to direct threading the pistol mount piston to a fixed barrel 9mm Carbine, but what badness would ensue?
A 45 caliber can on two different 9mm then. You’d think there would be enough clearance to keep the Neilson device spring installed but I’m not sure I’d chance it. Time for another gun or another can, or both.
I have a YHM 9mm Wraith that I’ll be moving back and forth between pistol and PCC but my M9A3 doesn’t need a spring on it’s suppressor.