An add-on version of Who Am I?
Describe it like this:
I am a (type of add-on eg. Weapon, vehicle)
I am (colors)
I am a (real or pretend weapon)
I have (something special about the add-on)
I'll start.
I am a Weapon.
I am brown and black.
I am a real weapon.
I have a very loud sound!
Which add-on am I?