Duplicate firearms and ranged weapons can be picked up

[AKMDM]

If a player is carrying any ranged weapon (Beretta, Shotgun, M1 Carbine, or Crossbow) and walks into same weapon lying on the ground, they will be able to pick up that weapon, essentially having two or more.

These weapons should be fixed so that players cannot pick up duplicates of the same weapon without "destroying" the other.