If you have a junk 1911 frame you will do well to use a after market 22 conversion kit. If you have a good 1911 frame buy the 22 conversion kit that was made for that frame. A Colt 22 conversion kit. You can find them on Guns America, Auction Arms and Gun Broker. Gun Broker has been the best in numbers of items and price. I was told to only use a Colt on a Colt, Sig on a Sig and so on. Some of the after market kits can damage the frames. That I was told by a gunsmith.
Looking to put this on a Taurus PT1911. With the research I have done Kimber won't work without some mods to it and the Advantage or Ciener 22 conversion kit will work as is. The Advantage will stay open on last shot fired while the Ciener will not. Both should work with out mods.