This is an Iron Man Mark IV armor mini papercraft, the paper toy created by Gus Santome, he also created Iron Man Mark XLII Armor and Iron Man Mark I Armor Mini Papercraft. The Mark IV armor was designed by Tony Stark after Mark III was damaged in battle by Iron Monger. The Mark IV differs only slightly from the Mark III, with new designs for the chest piece and the shoulders.
In Iron Man 2 film, Tony Stark built the Mark IV armor in-between films to replace the heavily damaged Mark III. Using this suit, he put down nearly every terrorist cell and brought most of the world to peace. Stark later got drunk in the armor at his birthday party, prompting Rhodes to steal the Mark II from the armory. The two fought and damaged much of Tony's house. The suit was replaced with the Mark VI as a solution to the Arc Reactor's palladium poisoning.
You can download this papercraft template here: Iron Man Mark IV Armor Free Mini Papercraft Download