Romanian "G" Piston Question
 

Hi, Guys as you can see this will be my first post and buid.I was wondering if anyone knew what threads my Romanian Ak piston has. I have asked elsewhere but have not had a "for sure" answer.

I'm not sure.... but do you have the piston out or a us replacement? You could go to Home Depot, Lowes, etc and check it against the metric nut they have there. Not much help, but it may work.

I am curious why you are asking? Any standard replacement sold should fit. I replaced a G piston with one from Tapco and had no problem at all. expect it would be hard to find one that did not work.