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 (.38 Special, .357 Magnum, and 9×19mm Parabellum), six-shot (.327 Federal Magnum and .32 H&R Magnum), or eight-shot (.22 LR) cylinder.
