Ruger SP101

SP101
SP101 with Corbon Load Data
Type	Revolver
Place of origin	United States
Production history
Manufacturer	Sturm, Ruger & Co.
Produced	1988 - Present
Variants	See Models
Specifications
Weight	25–30 oz (710–850 g)
Length	7.2 in (18 cm) 8 in (20 cm) 9.12 in (23.2 cm)
Barrel length	2.25 in (5.7 cm) 3.06 in (7.8 cm) 4.2 in (11 cm)
Cartridge	.22 LR .38 Special .357 Magnum .327 Federal Magnum 9×19mm (discontinued) .32 H&R Magnum (discontinued)
Action	Double-Action Revolver
Effective firing range	33 to 55 yards (30 to 50 meters)
Maximum firing range	550 yards (500 meters) +/-
Feed system	5/6/8-Round Cylinder

The Ruger SP101 is a series of double-action revolvers produced by the American company Sturm, Ruger. The SP101 is a small frame and all-steel construction carry revolver, with a 5-shot (.38 Special, .357 Magnum, and 9×19mm Parabellum), 6-shot (.327 Federal Magnum and .32 H&R Magnum), or 8-shot (.22 LR) cylinder.

The Ruger SP101 was introduced in 1989 as the smaller frame counterpart to the GP100. Both of these revolvers, together, replaced Sturm, Ruger & Co's long-standing staple in the American firearms market, the Ruger Security-Six series revolvers. While no longer manufactured, a 9mm version was available until around 1998. A basic .22 LR version was also available until 2003 while a redesigned version was introduced in 2011.