Brian has written an excellent review of the STI GP6-C (“C” for competition) which he plans on using in the USPSA Production Division.
After my first 500 rounds without cleaning, I was very impressed with the GP6-C. There are only two things I would like to see added. The thumb safety is very thin and hard to get a thumb on. It’d be nice if STI could add a wider, 1911 style, safety. Not only would this make the safety easier to manipulate, it would also help keep the muzzle flip down.