Make weapons disapper

[-IT-Q- 0]

as an example:

u have a map with a class system which means every units respawns every time with his defined equipment;

but u can trick this system by dropping weapons on the ground and killing yourself several times - now u've got 4ex 10 aa launcher at the base and therefore you r not the only with aa anymore; but in fact thats was the system wants to prevent - more units having this weapon at the same time;

but weapons disapper automaticly after a certain amout of time - is there a way to influence this given time or any other method to prevent this?