The weapon was transported in 3 sections by a 100-horsepower 15 ton Austro-Daimler road tractor M. 12. It broke down into barrel, carriage and firing platform loads, each of which had its own trailer. It could be assembled and readied to fire in around 50 minutes. The mortar could fire two types of shell, a heavy armour piercing shell with a delayed action fuse weighing 384 kg, and a lighter 287 kg shell fitted with an impact fuze. The light shell was capable of creating a crater 8 meters wide and 8 meters deep, as well as killing exposed infantry up to 400 m (440 yd) away. The weapon required a crew of 15 - 17, and could fire 10 to 12 rounds an hour. After firing it automatically returned to the horizontal loading position. In 1916, the M. 11 design was upgraded and the new M. 11/16 was produced, the difference was mainly that the firing platform had been modified to allow for a traverse of 360 degrees. Also in the same year the new model was released, the M. 16. It had longer barrel (L/12) and longer range 12300 metres (13500 yd) .
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