Gamma shield armor

 is a variant of Metal Armor found in The Pitt add-on for Fallout 3.

It can be repaired with Metal Armor and provides a damage resistance of 36 as well as a bonus of 15 to Radiation Resistance whilst incurring a penalty of 1 to Agility.

Bugs

 * In the Effects menu, the Radiation Resistance and Agility modifiers are marked as coming from "Lead-Lined Armor," not Gamma Shield Armor, although this would explain the extra weight. Because Lead blocks Gamma radiation, the Gamma Shield Armor may shield against Gamma Radiation through the use of a lead lining, hence the "Lead-Lined Armor".
 * This armor tends to "phase" once dropped: it will disappear after a while if dropped, turning completely invisible, while it will still actually be there and can be interacted with/picked up.

Appearances
only appears in the Fallout 3 add-on The Pitt.