@JGoldman10,
From what I can tell, most major toy companies no longer make realistic toy guns. Nerf guns and water guns are still being made but they now have outlandish and colorful designs.
BB guns and airsoft guns are still being made, though the manufacturers do not directly market to children anymore (as in no TV commercials).
As I mentioned, Hasbro (the makers of Transformers) have stopped making the Megatron gun transformer. Whenever they do make it, as part of a Anniversary or Collector's release in the US, they add a orange cap on the barrel.