Weaponizing a Drone, while sounding exciting, brings a whole lot more challenges that are not encountered in regular ones.
People have tried putting guns on Drones earlier, but recoil is a big control challenge. Single payload drones may be better to start with. Cheap, disposable, and you don’t mind losing them if something goes wrong. Need’s a self-destruct feature for sure.
Arm it with a single stun or lethal grenade or a net gun.
Good luck if you proceed with this project.