An ancient Desert Eagle pistol, in .44 magnum. Interest in late 20th century films made this one of the most popular handguns of all times.
”— Fallout and Fallout 2 description
The Desert Eagle is a small gun in Fallout and Fallout 2.
The Desert Eagle serves as an excellent mid-game pistol, offering higher damage than the old 10mm, and a fairly common ammunition type. It out-ranges the .44 magnum revolver by a bit, and carries 2 more rounds in a magazine, but the .44 magnum does more damage and can be fired for fewer AP. Overall, this weapon is great until you can get your hands on a needler pistol or .223 pistol. Could be replaced by the 14mm pistol, but only with an armor-piercing fix patch.
In Fallout 2, it can be upgraded with an extended magazine, increasing its ammunition capacity to 20 rounds.
 Fallout 2