Then I measured my barrel on my 94AE, well it's right about 0.600", well there goes that plan. I don't want to cut it down to 1/2-28, I don't want any LH metric BS. Looks like my 2 main choices are 9/16-24 (.5625) and possibly 0.578x28, which would be kind of weird. But it looks like I'm stuck. I can't find squat in 9/16-24, silencers, thread adapters, quick connects, DIY form 1 materials. I can't find anything that will let me put a .578x28 anything on a 30cal silencer, which kind of makes sense if you think about it. I just waited 13 months for an form 4 to go through and don't want to do it again. It doesn't appear I can get a commercially made silencer with 7/16-24 or a thread adapter or quick connect. So form 1 and I can do whatever I want it looks like.