I can't upload anything to blendswap ... no idea why .... the support doesn't do anything. I switched to cgtrader:
https://www.cgtrader.com/free-3d-models/military/gun/scifi-cannon-1abfefcb-9d7d-44b3-b671-b581a1af377c
Thanks! this is really adorable! love it! i used it on my roblox gfx@ thank you so much:))
cool