Since the Complementary Spouse's nephews play Halo 3 professionally on Teams Instinct and Status Quo, I found this quite interesting. Having watched their tournaments both in person and on-line, I always thought the guns were almost right. However, for a gunny, almost right just grates.
Pascal addresses that here:
I think about stuff like this a lot and have come to the conclusion that the one thing that is even worse than wrong visual representations of real guns in games are horribly designed fictional guns. In this area a lack of understanding of firearms gets easily multiplied and if you thought an AK47 is a magic device in the first place your sci-fi AK7000 will be a magic device so random it will not convince even the stupidest player. Yes, in the realm of fantasy you can invent whatever you want and find an explanation for any technical problem, but there are still the laws of physics that should be considered. Unfortunately most sci-fi guns are so bad that people just stopped caring about them with no questions asked