This paper model is an Auto-Turret, a terran automated defensive structure produced by the Raven, from the military sci-fi real-time strategy game StarCraft, the papercraft is created by KGH. There is another papercraft version on the site: Starcraft II - Terran Auto-Turret Papercraft Ver.1.
This simple robot gun emplacement is suitable for driving off smaller hostile life forms for an extended period of time. Designs for auto-defense cannon turrets were available as far back as 2499.
You can download this papercraft model template here [Ctrl+F to serch "첨부파일" for download link]: StarCraft - Auto Turret Ver.2 Free Papercraft Download