ATAB/Dummy 13 Shoulder-Mounted Miniguns

I made this mostly for the Vanguard 13, but it uses the same mounting system as the stock ATAB cannons. You can use it with the multi-arm backpack I posted a little bit ago. For added flair, you can print the bottom of the gun in a separate color! Also used is my backpack mount for the assault cannons: Extra Arms / Assault Cannon Backpack for Dummy 13 by Cap'n Corny