So what is the deal with me not being able to grab a gun that isn't bugged. I grab SCARS or Scarabs and the ammo numbers are red with a negative number. Once I find a reload cache I can only carry 40 bullets at a time. What is up with that. Getting towards the end of the game I would like to be able to use a machine gun that has more than 40 bullets.

i also have this bug.. just another to add to the list