Fanzoj did not say that they "don't make firearms until 1955". They said that they were not allowed to make weapons til circa 1955. What Fanzoj did between the end of the war in 1945 until the war's allied victors allowed them to begin commercial production of firearms in 1955 is unlikely to be recorded history by the British and their allies for a number of good reasons at the time. For you old guys like me who remember radio it might be said: "....only the Shadow knows."