What do you recommend? Looking for something that’s reliable, easy to build, uses a 22LR barrel liner, and a minimum number of hardware parts. I attempted a Harlot (I believe it was v1.1) but only got light primer strikes. So I want to try again. I still have some barrel liner left over. I don’t want to spend more than about $20 on hardware parts.

Ideally it would have a 16" barrel, or if not it could be easily modified to have a longer barrel. It can be single shot, but bonus points if it can shoot more than one. More bonus points if it has a UFA-compliant option.