My understanding is that the firearms you mentioned are not classed as AOWs because their overall length is greater than 26". Note that (again, my understanding worth the paper it's printed on) existing rifles or shotguns cannot be converted. Rather, a "virgin" receiver must be built ...

I was thinking that the drill press would be used working straight down, not side-loading the drill. I wasn't at all clear about that. For my own education, is there a reason this (using the drill press correctly) would be a bad idea? I suppose it would leave a radiused edge rather than square, anyt...

I don't have any particular expertise, so get your salt can out and dig out the biggest grain in there. Drill press with an end mill bit installed? Make your setup to clip one side at a time on each baffle, then change your setup to clip the other side of each baffle. Or, maybe two steps for each si...

Would it make any sense to just create a solid "shim" to thread onto the muzzle before the suppressor is threaded on?

And, for my own education, if that type of workaround does make sense for a .22lr suppressor, should it be avoided for centerfire uses?

Thank you for posting the X-rays, Enfield. I enjoyed seeing them, and also reading your other thread http://www.silencertalk.com/forum/viewtopic.php?f=10&t=139203 on the topic. I wasn't aware of these before your thread, and I've enjoyed learning a bit about them. (And sharing in your excitement...

doubloon wrote: huge like Rosie O'Donnell not huge like Tom Hanks

I thought Tom Hanks was only Big?