What was created from the Type 30 rifle for the Imperial Japanese Navy as a replacement for their aging Type 22 Murata rifles, with the date meaning the Meiji period according to the Gregorian calendar together with year designations stating the year of the reign of the current Emperor? 
Japanese calendar:  At present, Japan uses the Gregorian calendar together with year designations stating the year of the reign of the current Emperor.
i don't know