Well... thats plenty of reason to get a 1911 in 22 then.
I read they are a little less reliable overall and a little more ammo picky, but work well enough for practice and the range.
Here is a couple links for the Rock Island...
Buds
Cheaper than dirt
I think the one on Buds looks pretty slick. Steel and aluminum, no zinc alloy like the others.
Do some reading on it, I have only read a little about it so far, so I can't really say if its good to go or not.