Seems this pistol is never recommended, but having owned the p22,22/45,m&p22,and 1911-22 I find it to be the best.
It's nice and heavy and feels like a real pistol. Lots of accessories
can added from real 1911 parts, such as tuning the hammer springs .etc
for use with various rounds. Grips,Mag release,thumb safety,grip
safety,main spring housing and main spring,sear spring, disconnector,
hammer, hammer strut, and sear can all be changed with real 1911 parts.
Seems more reliable than my 22/45 (so does the m&p22) I believe because of the larger ejection port and the fact that the sliding mechanism isn't susceptible to grime build up like the 22/45.
The only downside is that larger reddot sights can't be mounted to it without having issues with short cycling due the heavy weight of the slide, this problem is also present in most full .22s based on actual pistols. This is not an issue with designs like 22/45 and buckmark since sights are not mounted to the slide mechanism.