I have a Draco pistol that has been registered as an SBR. I intended to have it threaded and run a suppressor for hunting. Well I had the barrel pulled and rethreaded as concentric as possible. It did not work. I got an end cap strike after three rounds, well really after the first but I wanted to give it a couple of more rounds.. Now I need to find a replacement barrel. I'm not sure where to find one that will be concentric. A friend suggested GM barrels. Will any barrel for Romanian guns work? Any suggestions appreciated.

Thanks