Of course, the game often shows that Agent 47's 1911s have custom slides from El Monte, California. Is there a well known gunsmith, manufacturer, or customization workshop in El Monte, CA? I have looked on Wikipedia but didn't see any mention of that. Furthermore, California is so despotically restrictive on firearms that it seems like an odd place for a shooting enthusiast to set up shop.
Right next door in Nevada there are lots of small companies that will do awesome custom work on your competition firearms and culturally there is a lot of libertarian and anti-government sentiment. For example, Cliven Bundy is from Nevada. I would have had the custom firearms be from Nevada.
