Thanks to both of you, your feedback is as important as the guns, Eswube and cplnew!
Now, a modern howitzer, the soviet M-1938, with a heavier round than the german, american and british (in this case, much heavier!) divisional howitzers.
Credits: Thanks to Caddaric, I choose a shade of dark green from his soviet equipment.
Doubts: I don´t now if the elevation and transverse handles are of metal finish, I only saw once in a ceremonial gun, and it was in the chinese version M-54, not the soviet original.