Ruger SP101
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The Ruger SP101 is a series of double-action revolvers produced by the American company Sturm, Ruger & Co. The SP101 is a small frame and all-steel-construction carry revolver, with a five-shot; six-shot; or eight-shot cylinder. Wikipedia
Action: Double-action revolver
Barrel length: 2.25 in (5.7 cm); 3.06 in (7.8 cm); 4.2 in (11 cm)
Effective firing range: 33 to 55 yards (30 to 50 meters)
Maximum firing range: 550 yards (500 meters) +/−
Produced: 1989–present