No bueno. .22 mag overall case length is too long relative to the energy generated by the low powered round to reliably cycle the slide in semi auto. .22 mag is a revolver only round.
They had a problem at first and reintroduced it. I don’t see that reliability is an issue.
Nope. Functions beautifully in my High Standard .22 mag derringer. Hammerless and beautiful. For self-defense where total concealment is needed, it is tops.
Kel-Tec deals with the case length issue by using shallow chamber fluting to help "float" the case during extraction. It makes for a dirtier pistol, but it works. I have had a PMR-30 (Gen 2) since 2016, apart from a few hiccups during the first few magazines of ammo, it has functioned perfectly (about 1,200 rounds through it thus far).
Most of Kel-Tec's problems with the gun could've been solved by tweaking the feed ramp and chamber throat. If they paid a tech to spend ten minutes more per unit, just polishing the feed ramp and chamfering the bottom chamber edge, the company would have far fewer returns of these pistols.