I managed to buy one from a hobby shop in California before it went bust. I would first try writing D. J. Parkin. They may have stock which is not on the web site. I've had that experience with them before. You might get lucky. Failing that, I'd happily give you the part of the kit which I still have. It's a one piece - shell carrier, torso, gas mask, etc. It can be converted into the figure you want. You'd need to buy the Parkin heads kit and some shells and maybe a few other things, but it's do-able.