Sorry to say but without heavy modding that isn't possible

in this map you research weapons that go into the same slot . and when you create them they drop the previous weapon. same with med kits and defibs.. just keep on creating things that go in the same slot . and they drop.. but not the same item twice. they have to be different

引用自 Saint：

in this map you research weapons that go into the same slot . and when you create them they drop the previous weapon. same with med kits and defibs.. just keep on creating things that go in the same slot . and they drop.. but not the same item twice. they have to be different

When you get an item, you will always drop a different item than the one you have equipped.
In the case of weapons, if you spend a little bullets, you can equip the same weapon.

Build order at minute 10 :
medkit, fire ammo, medkit, pipe, molo, pipe, use pills, pills, adre, pills, use molo, pipe, molo, fuel can, place fuel can, shoot at the fuel can, fuel can, drop fuel can for later, use medkit, medkit, defib, punch the zombie, medkit, grab fire ammo, punch the zombie again, fire ammo, medkit, rage full auto on the pack of zombies, use molo, pipe, molo, shoot at the smoker, tilt, place fuel can, shoot at the fuel can, fuel can, scream, drop fuel can for later, shoot at the tank...
When the ♥♥♥♥ do I build the rocket ???
Man, with bots, it's unplayable^^

Maybe instead of having a pick option, equiping selected item, players could have a drop option, creating selected item on the side of the research station (so they don't pick it by accident) ?