Letter from Mr. Bravo Re: .40 S&W to 9mm Conversion Barrel for a Glock Model 23?

The first source I would use for replacement pistol barrels (not just for Glock) is http://www.kkmprecision.com/index.asp. Kevin’s company produces arguably the most accurate barrels available, and that is only a part of his superior capabilities as a firearms designer and manufacturer who is well regarded at the highest levels of military purchasing. He actually produces some of the specialty pistol barrels that are retailed under other brands. Go to the source for the best value.
I know him personally as a good and honest man, and BTW I would also consider him my first choice for a custom rifle. -Mr. Bravo