[mjn.mixael]

We needed an intimidating artillery platform, so I whipped this one up. It features six massive guns on a platform backed with thrusters. The thrusters are meant to counteract recoil from the guns. By the way, the model is ready for the new animation support coming soon to a build near you that will include translation... I'll update the files here at the time so the guns have actual animated recoil. The platform itself is about 250m wide, to give you a sense of its size. It's really more of an installation rather than a sentry gun, but you can call it whatever you want! Released under Creative Commons Attribution 4.0 license.

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[Colonol Dekker]

Looks fit for purpose.   

[Nyctaeus]

Very cool thing with a lot of potential uses.