The rp weapons (Zat,Staff, P90,M4A1,Shotgun,AWP,Mp5,pistols) are glitched/bugged, when you type /dropweapon while holding them they drop

, but if they were with low ammo(or none) you pick them up with a full magazine, except for the Zat and Staff, you can drop and you pick them up with more 50 naq for the zat and more 100 naq for the Staff.
I suggest removing the dropweapon command while they are fixing it...