The breech is a manually operated screw type mechanism ... heavy lift helicopters (it is not CV-22 Osprey capable). The M198 howitzer weighs 15,760 pounds (in both traveling and firing ...

The howitzer itself is like something out of a miniaturized military fantasy—nearly entirely 3D printed. It boasts an interrupted thread breech-locking mechanism and recoil-absorbing mechanism ...

The main armament is a 155-mm M126 howitzer in an M127 mount with a fume extractor and large muzzle brake. The recoil system is hydropneumatic and the breech block is of the Welin-step thread type.

The howitzer itself is like something out of a miniaturized military fantasy—nearly entirely 3D printed. It boasts an interrupted thread breech-locking mechanism and recoil-absorbing mechanism ...