Your IM message box is full. Thought I'd keep you up to speed. I found a guy who is willing to machine a spacer that accepts AR15 9mm barrels to replace the existing barrel on a Tec-9.
We are still working on the dimension and I'll let you know if and when it works.
I still plan on making a retro fit kit to put an AR15 9mm barrel and a AR15 stock on a Tec-9.