Wanted: M1A / BM59 flash hider/muzzle brake

Howdy folks,

A long shot in the dark, but I'm looking for a pair of flash hiders / muzzle brakes with the rare .595-32 thread pitch found on the M1A and BM59 rifles. I will pay well for the right ones and will also pay a finders fee for a tip leading to a purchase. Any info is really appreciated. 

Warm regards,  GW