This is a prop for the Carnifex Hand Cannon from Mass Effect.
Printer:
CR-10
Rafts:
Yes
Supports:
Yes
Infill:
15%
Notes:
I found the best way to print this is upside down. That allows for the least amount of supports and similar printing for both sides.
Autodesk Inventor
I designed this based on reference photos from the game. Proportions were modified to fit my hand.