English: Kulsprutepistol m/45B (Kpist m/45B) 9x19mm, known in English as the Carl Gustaf m/45B submachine gun. The m/45B, unlike the m/45, features a fixed magazine support, smaller holes in the barrel shroud, a strengthened bolt buffer (in the receiver-rear), and a hook securing the buffer cap in place. The m/45 was in service with the Swedish Armed Forces from 1945, until 2007, when the Swedish Home Guard phased it out. This particular m/45B is housed in the collections of the Swedish Railway Museum.