One npc triggered by another one

[E_Man]

I'm making a script and I want to use the command placenpc. I need to to be triggered by the original weapon, but I don't know how to do that because "if (weaponfired)" won't work and "if (hasweapon(weapon))" won't work because that I don't want it to activate instantly. How do I trigger a separate npc with a weapon?