From the manufacturer:
This is a model of the German Bundeswehr Self-Propelled Howitzer M109A3G. It is a collaborative release by Italeri and Tamiya. The M109A3G-specific parts are made by Tamiya and Italeri. The kit has new and updated parts, plus Tamiya figures, decals and instruction manual.
Design work on the actual U.S. M109 began in 1952; eventually, the self-propelled Howitzer served 26 militaries, including the German Bundeswehr's M109G, which had its own track and cupola design, plus smoke dischargers, turret rear storage boxes and panoramic telescope. Replacing the 155mm gun with the FH70 barrel improved range by over 30% to 24.7km; the M109A3G served until 2007.
Parts come molded in olive green colored plastic with figures and road signs molded in grey. Tracks are one-piece belt style molded in dark silver.