G.I. Samurai (戦国自衛隊 Sengoku Jieitai (Time Slip) and Sengoku Self Defense Force?) is a 1979 Japanese adventure movie about a group of Japanese Self Defense Force (JSDF) soldiers suddenly finding themselves stranded 400 years in the past, during the Sengoku period. With their advanced weaponry, the soldiers under their highest-ranking officer, Lt. Yoshiaki Iba's (Shin'ichi Chiba), decide to fight alongside General Nagao Kagetora to assume power over all of Japan; but in the end only one of the soldiers survives.
The Howa Type 64 is the main weapon of the most jsdf members. Lt. Yoshiaki Iba (Shin'ichi Chiba) use it at the one scene.
Howa M300
JSDF members Yoshiaki Iba (Shin'ichi Chiba) and Mimura are seen using the Howa M300, including as a sniper rifle during a climax scene in the middle of the film.
Sumitomo M2HB
The M3A1 Halftrack that the JSDF uses has a Sumitomo M2HB mounted on it. Lt. Yoshiaki Iba (Shin'ichi Chiba) and other JSDF members fire it throughout the film. Early in the film, Nagao Kagetora (Isao Natsuyagi) also fires it, reacting with amusement at the full automatic fire.
Sumitomo NTK-62
The Mitsubishi J-3 Jeep used by the JSDF soldiers is equiped with a Sumitomo NTK-62 mounted in the rear bed. Lt. Yoshiaki Iba (Shin'ichi Chiba) and other JSDF members fire it throughout the film.
Several JSDF members (including Lt. Yoshiaki Iba) use the M3A1 "Grease Gun". The M3A1 was actually standard issue for the JSDF, being popular as a personal defense weapons with tank crews until the introduction of the Minebea M-9.
Tanegashima
Several ashigaru fire tanegashimas rifles in two battle scenes.
Mk 2 hand grenade
Mk 2 hand grenade was used by a few jsdf members, include Lt. Yoshiaki Iba.