I had the .22LR kit on my Tanfoglio Model "L". The kit turns my gun into essentially the same gun as you are looking at. The arrangement was very accurate but very ammo particular. The only ammo that worked was high speed round nose cartridges. Hollow point and truncated cone bullets simply would not feed consistantly.
The mags are polymer and are fine. They do drop free, no problems. They do not lock back the slide though after the last round. Not sure if this will hold true with the .22LR pistol, you should check.
I sold the kit when I acquired a CZ kit for my SP-01. The difference is night and day. The CZ will run with any of the .22 cartridges I have fed it. The mags are metal and the slide will lock back on the last round. The kit like the Tanfoglio is unbelievably accurate. CZ makes a .22LR complete gun and you might want to see if you can get one of those here in Canada.
The major difference between the two guns is the Tanfoglios require the entire slide to be activated while the CZ uses only about one quarter of the slide. This likely accounts for the latters ability to run with common plinking rounds.
Both of the kits I found were well made quality products. If given a choice I would run with the CZ, if not you will enjoy the Tanfoglio.
Take Care
Bob