The KT .22 Mag autos should be available by now for order, I think I saw CDNN list them.

While there have been a number of semi auto .22 Mag rifles, .22 mag self loading handguns have indeed been less common. One that comes immediately to mind is the old Grendel (KT's older incarnation) hi cap .22 mag auto. Those tended to reportedly self destruct after a time, so one can only hope that the design has improved a bit.

The expensive FN 5.7 pistols offer superior ballistics and a high capacity, presumably the new KT offering is meant to be a poor man's FN.