Iron Man armor (Mark XIX)

Main system
 The Mark XIX High-Velocity Suit (or Tiger) was created after the events of the New York battle. It is called tiger because of it's high speeds and has a similar color scheme. This is a prototype to the Shot gun armor.

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Upgrades
This prototype was able to reach high speeds and was the fastest armor until Tony realized that the Armors could go faster and built a upgraded version. This was basically a test armor.

Iron Man 3
The suit was created after the New York battle. Tony realized that there couldn't be one suit that could do anything, so he started building suits specializing in certain areas, such as speed. It was the fastest armor until the Mark 40 was created. It was put into the Hall of Armor and added to the Iron Legion. When the "House Party Protocol" was ordered, it and the rest of the Armors flew to Florida and assisted Tony in the Extremis battle. It was either destroyed by the Extremis soldiers or the "Clean Slate protocol"

Trivia

 * Was later upgraded to the Mark 40 Shot Gun armor after several test.