Batman VS Superman - Turret Guns
 

Hey there! I really hope that someone can help me a little bit here.

I have already pre ordered the Mafex BvS Batfleck Figure :D

I would like to ask, can someone tell me where i can buy
these Turret Guns that he shoots Superman with?

I already typed "Turret Gun" at Ebay.com but could not find any good ones.

Are there Special Companies that i could look for?
What else can i type in at Ebay, to find good Turret / Gatling Towers Cannons similar to the ones Batman used in the Movie.

These should scale with the current Mafex Batman 6" ones.
So these should be...half of the Batman Figure, a little bit smaller maybe
around 4"

So for what size should i look for? 1/12 Scale?

I really do not know, maybe someone can help me here?