The M-109 A2 it's the second version of the M-109, U.S. Self Propeller Howitzer, of 155mm. Was introduced in the early 1960s. It has been upgraded a number of times, most recently to the M109A7. It's the most common artillery of the west countries. Model done on MAX 2013, untextured model, only the tracks and some parts has unwrapped & textured.