BMP2 for 6mm games
modeled in blender 2.79b at full dimensions from a 3 view drawing, then scaled to 1/100 when saved as a .stl
scale in slicer to 35% to get 1/285 micro-armor size ( 6mm )
reference die is 15mm.
main gun is stupidly thick/out-of-scale
might experiment with using a bristle from a cheap paintbrush in place for a thin gun barrel.