During my searches, I came upon the taccom site and it does show the 17" tensioned barrel your talking about. Out of stock of course. I had wondered if they were any good not being familiar with the name.My first foray into AR22s was with Taccom3G. He made some 17" tension barrels that were awesome and used the CMMG (Ciener style) bolt with a collar of slightly different dimensions than CMMG. He moved away from 22LR for several years but is getting back into it and making 22LR products again. I think he's even offering that 17" tension barrel again though it's not offered threaded at the moment.
I also reached out to Scott Volquartsen to see if he had plans to make his tensioned barrel in the cmmg style since he offers it for the s&w. He said he wasn't planning to but he'd look into it. I've had great success with his other products and would likely go that route if the opportunity arises.
So now I have been searching for a few weeks and everything seems to be going out of stock that I consider purchasing. I suppose I will have to piece it together once I decide what to do.