Head, torso, vest, upper legs, and hands - Comic Pack Gung Ho
Lower legs - AOCI Recondo
Arms - ROC 2 Pack Copperhead
M16????

I never intended to make a custom Gung Ho. I thought the 25th comic pack version was pretty good and would suit my needs. However I really did not care for his boots and since I had an extra set of Recondo lower legs I thought I would swap them. However as I looked the figure over, his arms sucked too, and mine had a jacked up right elbow joint. So I did a search and looked at what other people had done. That inspired me to fix his mustache. So a simple tweak turned into my custom Gung Ho. I even added a working knife sheath and changed his over-sized '45 to the Marauder Gun Runners version.