I've found a bug! I was trying to be awesome reloading my weapon really fast when I suddenly realized my magazine was getting larger every time I did. It seems that if I load my gun with a mag and unholster my weapon at the same time over and over - without putting the mag in my inventory - the mag grows in size.
It is probably because the mag is being attached to the gun as it is growing from inventory size to regular size, and thus the mag grows with it.
