Joe AutoDrill wrote:
Does anyone out there actually have the tools and know-how to rifle the ID
of a barrel?

If someone truly wanted to build a home-made weapon, could the process of
making the ID of the barrel rifling be farmed out?

How would you do it?

Any old sod can build a smooth bore barrel IMHO. ...Well, any old
metalworking sod.

You might like this:

http://www.practicalmachinist.com/vb...achine-126815/

I've thought about building some sort of .22LR pistol
and have decided that I'd just use Brownell's barrel
liners.