Magnum Research Desert Eagle - .40 S&W The Magnum Research Desert Eagle is a semi-automatic pistol chambered in .40 S&W, featuring a 4-inch barrel and a 10-round magazine capacity. The pistol is known for its distinctive Desert Eagle design and robust construction. This model combines the recognizable Desert Eagle platform with the .40 S&W cartridge and compact 4-inch barrel configuration. (L180689A)