This paper model is a SD MSF-007 Gundam Mk-III, an AEUG prototype attack-use mobile suit, and featured in the original design series Zeta Gundam Mobile Suit Variations (Z-MSV), the papercraft is shared by yenc.
The "Gundam Mk-III" also refers to three separate machines created by the AEUG, the Earth Federation Forces, and Titans.
After the AEUG successfully stole the RX-178 Gundam Mk-II from the Titans, two of the stolen units were sent to Anaheim Electronics to study, reverse engineer and duplicate their technology. There a group of technical experts created the Gundam Mk-III, which featured an improved version of the movable frame used on the Mk-II. Gundam MK-III also has a pair of wing binders which mounts several thrusters to increase speed and mobility. It"s armaments consists of shoulder mounted beam cannons, a beam rifle and a shield with two beam sabers integrated into it. [Source: wikia]
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