The Japanese inventory included a large caliber, short range, spigot mortar that was, to the best of my knowledge, unique in design and concept. I would appreciate any comments and observation about these weapons.
Sorry i tried my best and the MOST information i could find on it was this patheticly small blurb: " M93 150mm Mortar - Weight: 557 lbs. This weapon was strictly a seige weapon and had a range of only 2000 yds when firing a 44 lb shell. " Otherwise i couldn't find anything...sorry