This gundam paper model is an AMS-120X Geara Doga Psycommu System Test Type Head, featured in the original design series Char's Counterattack Mobile Suit Variations (CCA-MSV), the papercraft created by [unknown].
The AMS-120X Geara Doga Psycommu System Test Type is a prototype psycommu test use mobile suit. The Geara Doga Psycommu System Test Type was built solely to develop the weapons used on Char Aznable's MSN-04 Sazabi. The unit was presumably built using a heavily modified Geara Doga frame and equipped it with Sazabi's weapons such as the scattering mega-particle cannon, the beam shot rifle, and beam sabers. Later it was used to develop the MSN-03 Jagd Doga.
You can download this papercraft template here: AMS-120X Geara Doga Psycommu System Test Type Head Free Gundam Papercraft Download [Box] [Gavitex]