IJAAF Type 89 twin flexible machine gun

The Type 89 twin, operated from the dorsal position of a Mitsubishi Ki-2 "Lousie" light bomber. (photo: ARAWASI)

Another Type 89 twin, this time installed on the dorsal position of a Kawasaki Ki-48 "Lily". Note the same mount with the previous photo. (photo: Kikuchi Collection)

Aerial gunnery training with the Type 89 twin. This particular heavy wooden mount was stationary. Note the rail line on the ground. These were used to mount a railway trolley with a machine gun on top for more realistic mobile training. (photo: ARAWASI)

A Type 89 twin with crates of ammunition found by US forces at the end of the war. Note the magazines on the ground (photo: NARA)

One of the few surviving Type 89 twins can be seen in the Museum Satria Mandala in Jakarta, Indonesia. (photo: ARAWASI)