Why did I give this a whole section?  Because it is cool.  In the beta versions, you could apparantly hold the gun in multiple positions, and change them whenever you wanted.  In the final version, it only rotates when you are very near to an enemy, which many now call "gansta style."  Why was this taken out?  Probably because it was useless.  But nobody will deny that it would have been cool.  So here are the different positions that the guns could have been held in.
 
 

	-vertically
	-double vertical
	-horizontal
	-double horizontal
In the final version, your guns only go sideways when you are in close proximity to an enemy.  Here's some screens of that.