So here's a little public service announcement.

Blood and Skulls Industry, whom you might have seen as a shop for many tank-like objects of glory, has a little special qualifier on its heavy weapons.

[url]http://www.ebay.com/itm/Gatling-Heavy-Cannons-Long-2-/262737898021[/url]

These, for example, are half inch diameter at the base, the Exact same diameter as the avenger gatling cannon for the Imperial Knight. The length of the weapon, at two inches, is actually 3/8" longer than the base gatling cannon.

As I type this, he's also starting work on a mounting plate for the basic Knight weapon arm, to allow his weapons to be fitted onto Knight arms.