About half of the figs are figs from Old Glory's CDVN-01 "US Infantry in Helmets",with most of the remainder from Peter Pig's Vietnam range (M60 gunners and grenade launchers, plus a few riflemen). The GLs are all M79s, until somebody releases the appropriate figs with M16/M203s. The Dragon gunners from Quality Castings "Modern 1980's Infantry AT/AA Weapons" pack (technically the wrong helmet/uniform discussed here in a previous post, December 2011).
I settled on painting them in OG107 green uniforms and ERDL camo helmets, matching Vallejo paint as best I could with period gear that I own. Here are the Vallejo paints that I used:
Uniform - 893 US Dark Green.
Equipment - 1:1 of 893 US Dark Green and 890 reflective Green or 1:1 of US Dark Green and 886 Green Grey.
ERDL Helmet Cover - base coat 2:3 893 US Dark Green and 886 Green Grey with camo of 889 US Olive, 890 Reflective Green, and Black.
Old Glory figs above.
Peter Pig figs above
A mix of Quality Castings (Dragon gunner), Peter Pig (LAW and M79), and OG otherwise.
Probably the most important thing that can be gained from the photos above is that the figures mix pretty seamlessly with none particularly standing out due to size or sculpting style.