@WilcoCan we have a rule that states that if anyone is not in an active gunfight, then they cannot pick up any weapons on the ground until 3 mins after the last shot is made.
In a real life situation, if someone heard a gun shot, they would not go and search for dropped weapons, pick it up and run away.
I've seen too many people banned for RDM because a hobo wondered in an active firefight, picked up a weapon and been killed because they were mistaken for the enemy that were actually in the firefight.