About this 3D model

I was asked to create an ak-630 to put on a rc scalemodel ship. In this specific case it is for a Russian Sokol, but it is seen on quite a few other russion vessels. The turret rotates 360 degrees, and the barrel elevates up to 90 degrees. Wikipedia: "The AK-630 is a Soviet and Russian fully automatic naval close-in weapon system based on a six-barreled 30 mm rotary cannon. In "630", "6" means 6 barrels and "30" means 30 mm. It is mounted in an enclosed automatic turret."