The D30 is a Soviet 122mm multi-role gun introduced in the 1960s and still in use around the world today. It has a somewhat unusual 3-leg mount that is slower to set up than a standard trail, but allows for complete 360-degree rotation of the gun. The piece was designed for both indirect fire (maximum range 15.4km; more with rocket-assisted munitions) or direct anti-tank fire. Note that it came with an armor shield for the crew, which was left off the gun for this trip to the range.

Thanks to Battlefield Vegas for the chance to film this awesome cannon firing! It belongs to them, and will be set up at their facility for a pretty awesome rental firing experience if you are into that...