A little history from what I recall - It was around 96-97 that the agency (under Janet Reno's Justice Dep't at the time) decreed that all would carry the DAO Burrito in .40. Prior to that there wasn't a standard issue sidearm as such, but a list of acceptable choices. S&W models 19 and 66 were popular, as well as the Ruger Security Six though some guys were carrying the Glock 17. After the Beretta came the current DAO HK USP/P2000 thing. I can't imagine that Bill Jordan, with his monstrous paws, would like the HK as it would be like a pocket carry .380 to him. I've shot one, and with my bigger than average hands it wasn't an impressive experience - grip too small, trigger travels too far back. Smaller guys seem to like it just fine though.
They're currently phasing out the HK/40 and going to a couple different 9mm Glock platforms.
Disclaimer: Not a BP agent but know a few...
