there are some 'work around' solutions to the oddball threading of the Yugo flash hiders. One is to get a bulgy 4 piece (or the copies you see on gunbroker, I think APex Arms has them too for around $65) and have it opened up and a bushing with the proper thread pitch pressed in.
Another idea I had was to get one of the Blackthorne Products extended Yugo M92 cone flash hiders for $35, and have a machinist chop it down and cut some slots in it to make it like a big M16A1 flash hider. Not sure how effect it would be, but it does give a basis to work from.
I am sure someone has a bulgy type flash suppressor on their Yugo Krink M92. Is there any true difference between original (Conical) vs. Can type (4-pc supp.) Any input is greatly appreciated. Don't mean to beat up this subject. Many thanks.