I'm pretty certain the gunbelt is a custom piece along with the tape recorder pouch and holder for the flashlight. Same goes for the S&W 76 mag pouch. As for the K-Bar knife and holster and the Colt holster, those are easy to find from the low end to the high end depending on how much you want to spend. The reason I know this is because I've done a bit of research in trying to duplicate the belt myself.
As for the straps that hold the flashlight to the S&W 76, I'm pretty certain that that is custom too. It looks like bent copper or brass strips witth a screw in the middle. Not too tough to fabricate I would think.
I believe Harada is selling a resin casting of the S&W 76 in the Junkyard. Of course for the real deal there is one on Gunbroker.com for $6,000.00. Or you could go for a reproduction called the SW 76 for about $5,300.00 (2010 price). It's a fully automatic SMG, unlike the carbines that were sold some years back. Moreover, you can pay for it in a 6 or 12 months without interest. Here is the link:
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One thing I have not been able to identify is the exact model of blue flight suit.
GB