Join us for a lively, in-depth conversation about police weapons. St. Louis Metro Police officers are lobbying Chief Sam Dotson for .40-caliber duty pistols to replace outgoing 9mm Beretta 92s they now carry. The agency's police union has also asked for patrol rifles for its members. Chief Dotson tells PoliceMag.com which way he's leaning on the caliber debate and why he's reluctant to allow officers to carry their own rifles on duty.