This robot paper model is a very detailed (total 115 pages) GAN01-SUNSHINE-L, a GA NEXT model that appears in both Armored Core 4 and Armored Core: For Answer of the mecha-based video game series Armored Core, the papercraft is created by Kimbabsa.
A smaller and lighter version of the SUNSHINE, the SUNSHINE-L is a middleweight NEXT design with slightly increased mobility and more combat adaptability than the original SUNSHINE model. It is popular with inexperienced players, as the SUNSHINE-L's high AP and Shell Defense ratings make it forgiving of pilot errors that are common among newcomers.
Realizing that their SUNSHINE model was overweight, unwieldy, and cumbersome, GA tried to refurbish it into something more manageable. They did it by modifying its arms, legs, and generator; those three parts being the most responsible of the weight. A workable stopgap model, it nevertheless managed to solve most of the problems out of the SUNSHINE and proving itself to be much more versatile than its older brother. Indeed, if the NEW-SUNSHINE project didn't succeed, the SUNSHINE-L were to have a long life, serving in many GA's frontlines. The machine continues to be offered to mercenaries hoping to work alongside GA as far as the ORCA Uprising. [Source: wikia]
You can download this papercraft model here: