As I said I got it on E-bay for $25. Price on the box read $19.99.
I used Testor's Metalics, Aluminum, Titanium, and Burnt metal over the bare vinyl.
For a chrome look you could use Alcad.
I have had good luck with that over a gloss black enamel coat.
BTW, the gun was stolen from my sons stash of GI Joe stuff, the full size Joe's not the 6 inch action figures.
Included in the box is a thin stand that supports the figure upright, but it is tippy, which is why my wife knocks it over. . .or it scares her, I am not sure. ;D