Darkrp MADCOW duplicating problem

Hi there
looks like this is going to be my first Thread here!

Anyways, i am working with this Darkrp server and i want to get rid of a small problem, whenever i drop something (madcow weapon) Example: Knife, c4 or a RPG when i pick it up the ammo duplicates.
What should i do to solve this problem?
Sorry for poor grammar.

Either set a variable for each weapon when it’s dropped to store the amount of ammo it had.
Or make them give no ammo when picked up in the weapon lua files.

Second way sucks a bit, first way is effective but will take a bit of lua work.