Bolt for Japanese Arisaka Rifle, SN 72246. Serial number of bolt may or may not match. The Type 38 rifle Arisaka was a bolt-action rifle that supplemented the Type 99 Japanese standard infantry rifle during the Second World War. The design was adopted by the Imperial Japanese Army in 1905 (the 38th year of the Meiji period, hence "Type 38") and served from then until the end of 1945.