I'm choosing to crit this because I did something almost just like it last year. Fun isn't it? The number of guns you fit on the page is very good, game design companies do not like flipping pages during interviews, so good call there. The originality of the guns is actually pretty good! I don't see to much here that looks just like a real world weapon. You seem to have researched these well and most of them seem like they would work. The biggest negative I have is the craftsmanship. You need to be holding down the key that makes perfectly straight lines when you draw these, especially for the barrels. Some of these are lacking triggers, so add those too. Make sure you think about holding these too, ask yourself would the hand really fit around the handle? Keep it up.