First of all, I'm looking to suppress an AK SBR. I'm not sure if the factory threads are concentric, and the foundation for my rifle is a Draco pistol which are notorious for spotty QC. Is there a way that I can check for concentricity without taking it to a gunsmith? No big deal if there isn't, just thought I'd ask.
Next, if they aren't concentric, is that correctable? i.e. can it be re-threaded properly without changing the threads?
Finally, I'd like to use a "traditional" PBS-1 type suppressor. Is there anyone who makes a good PBS-style suppressor stateside, or a way to get a real one? I see Red Jacket Firearms makes an AK-specific can, P/N BMF-AK-SS, that looks nice, but I've never heard of Red Jacket before. I'm sure there's more out there, I just can't seem to find 'em.