This 4th installation covers two Vietnam War gun trucks, both M54A2s. One named "Iron Butterfly". The other named "Mighty Minny". The set provided two variations of Mighty Minny artwork, one of the most colorful and interestingly marked guntrucks to date - used 3 different blue tones! Option to build one or the other. One is based on an earlier rendition with a more classical font for "Mighty Minny". The later artwork used a more curvy typeset for the name. The respective rear gate artwork for both early and late are also included. The "Iron Butterfly" in this set is of the M54A2 version. There was an earlier version based on M54A1 chassis with similar side artwork with the armor plates are attached externally to the cargo bed. "Irob Butterfly" was armed with 4 M2s whilst "Mighty Minny" with 2 M2s and 1 M134 minigun. Each set of truck markings included all the fine stencilings during their service. Armor plating templates for both gun trucks are provided.