Makes the same whirring, mechanical sound as in the movie after Mac runs out of ammo but won't release the trigger, allowing the barrels to spin without shooting.
I am designing a sound system using a sound chip on a board, activated by the trigger. It would feed the sound of the gun firing into a small amplifier (perhaps one out of a car) and into some speakers. All the electronics will fit into the backpack ammo can. The speakers would actually include transducers that turn the ammo can into a speaker.
That gun kicks major ASS!! What a fantastic model how much time did you put into that?........I see alot of hours work. Thats the nicest version I've seen of that prop ever. I'd take my hat off to you if I had one.