Post 20, thanks for the info.
Post 21, regarding hammer-fired, I'm aware one department used to issue the P226 SIG, and allowed those who were issued that pistol to keep them, even though they currently issue a Glock 17 (unknown if it stayed with the Gen4), but it also allowed its officers to use personally-owned pistols from some type of approved list.
Regarding the G47 (I believe Border Patrol gets the G47), some of CBP's personnel instead, were issued the G19gen5MOS (Customs, e.g. at airports). CBP also has its special 11+1 round version of the G26gen5, but I don't personally know what unit or job-function gets that particular Glock. As there are several thousand CBP cops who'd know much more/better than me (just a retired LEO).
More recently, word has it the Staccato 2011 is being OK'd, sometimes issued, to various units, or individually purchased for duty-use, such as USMarshall Service, LAPD SWAT, and unknown-to-me lesser known departments/agencies.
Post 21, you might consider putting more info down in your bio/member data, btw.