I don't believe this is anything new, but I ran across this slate contribution by Abby Ohlheiser. Keeping in mind that Ohlheiser did not editorialize the issue but was just responsibly reporting it, I thought I'd put my two cents in.
The article points out that gun manufacturers are being marketed in popular games like Battlefield 3 and Call of Duty. I will admit that I am not immune to this technique. I first fell in love with the AK-47 after it became my weapon of choice in Call of Duty 4 - Modern Warfare. I eventually would purchase my very own AK-47 because of this affection. Most marketing ploys are wasted on me, so if this one worked, there is probably something to the formula.
That said, I still have no interest in doing anything violent with my AK. It is just a big boy toy that I enjoy going owning and firing at the range.
If any part of the gun conversation needs to include the influence of video games or what guns people like because of them, its probably a minimal part at best. I feel confident the crux of the problem lies elsewhere.