This mech paper model is Mad Dog (Vulture), a heavy Clan OmniMech used for long-range indirect fire support, from the video game MechWarrior 3, the papercraft is created by Cantaris, D00mG1v3r and Sturm. The size of finished model is about 241 (H) x 188 (W) x 179 (D) mm. There are 15 different textures available.
With hunched shoulders, a protruding head, and reverse-jointed legs, the Mad Dog resembles a vulture, so much so that it was codenamed Vulture and Hagetaka ("Vulture" in Japanese) by the Inner Sphere forces which first encountered it. The name also fit the battlefield role of the Mad Dog; the main role of the Mad Dog is to act as a support 'Mech, and it often holds a hill maintaining constant watch over the entire battlefield, like a vulture waiting for its prey. With its ample firepower and decent speed of 86.4 km/h, it makes a highly mobile firing platform, and as such has spread to near ubiquity among the forces deployed by the Clans, although the design is favored more by Clan Ghost BearMechWarriors. The Mad Dog carries eight and a half tons of Ferro-Fibrous armor for decent protection, although it will not be able to stand up to heavy fire.
The Mad Dog was designed by Clan Smoke Jaguar as a second generation OmniMech based on the original heavy OmniMech Lupus of Clan Coyote. The Mad Dog also used some of the same moulds of the Clan Wolf Timber Wolf OmniMech. However, despite using some of the same moulds, the Mad Dog was named as a slur to the Lupus and Timber Wolf, and to Clans Wolf and Coyote. Because of its widespread production, most Clans maintain a large number of Mad Dogs in their toumans. [Source: sarna]
You can download the papercraft model here: MechWarrior 3 - Mad Dog (Vulture) Free Mech Paper Model Download