Adding more light on it definitely is showing it off more, but I'd still say that you should (instead of adding more lights than the first picture) change the background color from black to a grey or something. So much light seems to be degrading your work, rather than enhancing.
It's just the fact that you're trying to show a black gun on a black background. Blends faaaar too much. It's like trying to read this text... (There's text to the left of this)