This is the Rat King hand cannon from Destiny 2.
I'll warn you now this isn't for the faint hearted. Your printer and slicer will need to have it's supports well dialled in as the top section needs a lot and there are very delicate bits that are easy to snap off accidentally.
I did the best I could to simulate the handle covering but you could go over it with the cloth bands if your a perfectionist.
The magazine is fixed as is the trigger.
This thing is very large at nearly 400mm (15") in length. I can only assume that Destiny Characters have really big hands......
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