Follow the instructions provided by SIG
it will depend on the department. some CSIs can choose from a very short list of sidearms. Some departments mandate .40sw caliber and some 9mm. brands will include Beretta, Sig Sauer, Glock, Smith&Wesson, - and other recognized quailty brands. The most common will be a 15 round 9mm pistol.
Yes
No, 9mm
no
9mm
She usually uses the Sig P229 but in some occasions is carrying the P228 or P239
AFAIK, no.
650 or so
50-500 usd
100-400 or so
50-500 usd
He uses a Sig Sauer 9mm.