Custom Weapon

Hello, I’m here to ask how I can make my own weapon. Not a SWEP, like an actual weapon like how M9K has there own custom weapons, I want to make my own. Is there a program or somthing?

Custom weapons ARE SWEPs, so is M9K. There is no program, you gotta code it yourself.

i want to make the model of the gun.

Then the modelling forum is what you are looking for.