A two-tone Beretta 92FS was used by a thug in "Bears will be Bears" after being attacked by Eddy in his Bludbad form.
Glock 17
Detectives Nick Burkhardt (Dave Giuntoli) and Hank Griffin (Russel Hornsby) are armed with 2nd Generation Glock 17s as their standard sidearm. This is correct since the Portland Police Department standardized the Glock 17 as one of the sidearms allowed for use by all of their officers.
Revolvers
Smith & Wesson Model 27
Gilda Darner (Amy Gumenick) arms herself with a Smith & Wesson Model 27 revolver in "Bears will be Bears" after getting bail, taken from Rocky Babb's room.