First double-action semi-automatic pistol produced in the United States. Introduced in 1957. Had an alloy frame and chambered for 9mm Parabellum or .30 Luger. Barrel was 4". Finish blued or nickel, with checkered walnut grips. Rear sight was adjustable. Magazine capacity 8 rounds. Discontinued in 1982. The .30 Luger model is very rare and was mostly sold in Europe. Note: Add 150% for .30 Luger; 200% for early production—serial number 1001-2600. (100% premium for Pre-model 39.)