update: took it to a gun shop here in town to measure thread pitch, puzzled the hell out of them too. threads are squared off at the top and pitch...
stopped by a gun shop just before they closed earlier today, tried to put on a few different suppressors and none of the threads matched up, so...
I picked up a Beretta m1935 .32acp vt1944 from a gunsmith's used firearm bin. I only paid $300 for it and from what i found on it i got a pretty...