Iron Man Armor Mark IV (Earth-6531)

The Mark IV Armor is Tony Stark's fourth Iron Man Armor, constructed to replace Mark III following it's heavy damaging during Iron Man's fight against Iron Monger. It is very similar to Mark III, since it was designed to as a direct replacement for it, but also possesses some different features.

Capabilities
Made to serve as a direct replacement for the damaged Mark III Armor, the Mark IV carries over many of the same capabilities and functions, while only making a handful of advancements. As with the previous suits, the Mark IV enhanced the user's physical capabilities, granting them superhuman strength, near bullet-proof durability, and enhanced movement, speed and reflexes. The suit also carried over the repulsor technology, allowing for sustained flight while also serving as the suit's main weapon along with a greatly improved uni-beam.

The Mark IV also carried over the other weapons systems present in the former suit, including: multi-fire, computer targeted mini-guns in each shoulder, high explosive, anti-tank missiles housed in each forearm, and non-weaponized flairs contained in two circular launchers located at the suit's hips.

However, even while retaining most of the previous specifications, Tony Stark was able to improve various details of the suit's visible design such as the suit's internal mechanics as well as the design of the metal plating for the arms, legs, and chest to allow for a better fit and more mobility while wearing the armor. This possibly also made it easier to put the suit on and take it off.

Trivia

 * [http://marvelcinematicuniverse.wikia.com/wiki/Iron_Man_Armor:_Mark_IV?file=Iron_Man_Armor_Mark_IV.jpg#Capabilities Source: http://marvelcinematicuniverse.wikia.com/wiki/Iron_Man_Armor:_Mark_IV?fil