Well you don't really have to many to choose from. You have TNW and and TNW and and TNW. That's for a complete semi auto. Having a parts kit with receiver you can have someone like pirate weld up the receiver and install the TNW semi auto kit and then you install the receiver back in with the rest of the parts and you have another nice semi. As far as other companies selling ones ready to go or doing rewelds, I'm sure there is someone but who??? Good Luck.
I'm about ready (within 6 months) to try to do my own reweld and install a TNW semi trigger set and get working myself. Wish me Good Luck on that one. LOL