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Bullseye-L mailing list on this topic. There have been several threads recently that discuss the use of the M9/92FS in leg matches, and means of accurizing these. It's apparent that they're becoming more popular for EIC.
David Sams is the most prominent gunsmith working on these, but there are a few others as well. Sam's modifications are apparently pretty extensive. Other solutions that I'm aware of also rely on the addition of a bushing. But there's apparently some rule that these need to satisfy, so not all bushings are EIC legal.
But I've also seen reports of stock 92FS shooting well enough at 50yds w/ the right ammo.