I did the same search as my meaty but stubby fingered hands are thinking they want a Kimber 1911 .22.
I probably found 10-15 versions not counting what they were made out of. Ebay, Midway, Brownell's, and good ole google will lead you there. When you search are you looking for a slim grip to fit a standard government model 1911? Fact is that other than a few details, they all fit the same.
Kimber & other mfg's of 1911's have grips in their online catalogs-lots of them! The black rubber double diamond grips on the Kimber standard target are pretty slim in pics, so I'll "feel" them before I buy any.
I doubt that simple sanding will get you there as the screws must be shorter and they do sell bushings too. I suppose a tightwad like me will sand the wood and then modify the metal parts if I see a pair the right price/wood etc..
I could make them as i've checkered and stocked and grips are much easier to do, except the CNC versions are not that expensive and sure easier on the eyes.
FWIW, there is no other activity I've encountered in my life that has more eye strain than does checkering! I once visited Bishop's & Fajen's in Mo as I had them rebluing a soft soldered shot barrel and rough in-letting the stock pieces from my wood. The ladies that do that, their eyes don't last into late 60's -me thinks I heard it said there.
**** I would like to find someone(making 1911 grips) that will run my wood for grips on their CNC run? Many of the grips are cheap enough that must be Asian labor? I see Phillipine's and Costa Rica along with Malaysia and other spots as origins.
Any ideas? I've asked a couple of 1911 grip sellers and all say no deal.
I'd like to have a pair of Double Diamond grips made from my Osage Orange/Hedgewood or some especially figured American Walnut. I have plenty of-especially small pieces. When you do woodwork for over 50 years the small stuff chokes up yer shop!
