Have one on my .223 and works out fine for me at a much cheaper price than other trigger upgrade options ($10). Have lots of rounds through weapon and no misfires due to light strikes. This may be an alternative for some peeps like me who want to keep costs down.
I thought reduced power springs were used to increase reliability in .22 conversion kits. I think Ciener kits run better with them. If it works reliably in your rifle and you like the way it feels go for it.