I get many, many questions daily, mostly about "build one of these", or "market one of these, everybody wants one...".
If you've ever wondered why we have piles of MP5's to choose from, and one springer VZ Skorpion, this post answers that question:
If a gun has never been in a hero or villain's hand, it stands a slim chance of market success.
Note: I'm going to download EVERY pic from this place, and put them in a file called "WHAT NEXT?" (not really).
www.imfdb.org/index.php/Main_Page
From Stallone to Blade, if you want to see what the good guys/badguys were carrying in hit (or not so hit) films, this is the place to start.