Don't know about the CIA but "our guys" (your NATO allied) carry computers ;-)

How ever in Iraq I did work with our HUMINT and they carried Glock 19 (one of the 3 guys I worked with also had a Glock 26). They where with normal serial numbers and bought "officially" by our defense. I know because when "the guys" where working in the "field" where I was in charge I used to borrow the Glocks and go outside the camp to the range and fire them during the times where the HUMINT where inside the camp.

I´m pretty sure there is no official handgun in the CIA.