User blog comment:Cfp3157/Season 1 Episode 9: Oda Nobunaga vs Francisco Pizarro/@comment-4476906-20120812140935/@comment-5195329-20120814195838

The firearms that ended the samurai were weapons from the mid/late 1800's. The firearms here were both introducted to Japan in the 1500's. If Pizarro had a rifle maybe, but not the Arquebus which came before the Tanegashima.