This papercraft is a simple version Iron Man Mark 17 (Mark XVII, famously known by its name as the "Heartbreaker"), an Artillery Level RT Suit, and one of several new Iron Man Armors created by Tony Stark as part of the Iron Legion, the paper model is created by [unknown]. The size of finished model is about 200 (H) x 90 (W) x 45 (D) mm. This is a really simple version, there are only 3 pages.
The Mark 17 armor was created sometime after the Battle of New York. It was featured in Iron Man 3, and made its debut when Tony ordered J.A.R.V.I.S. to initiate the "House Party Protocol", in which it was activated along with all the other suits to aid Tony in his battle against Aldrich Killian.
The suit earned its name the "Heartbreaker", because it has an oversized chest RT, which can fire powerful blasts. The Mark 17 can fire narrow or wide beams and can also generate a Repulsor Shield for protection.
You can download the papercraft model here: Simple Iron Man Mark 17 (Mark XVII) Free Papercraft Template Download [Box] [Gavitex]