Ruger SP-101

SP101
SP101 with Corbon Load Data
Type	Revolver
Place of origin	United States
Production history
Manufacturer	Sturm, Ruger & Co.
Produced	1989 - Present
Variants	See Models
Specifications
Weight	21⁄4", 251⁄2 oz (708 g); 31⁄16", 27 oz (765 g); 4", 30 oz (850 g)
Length	7.13" (181 mm) with 21⁄4" barrel; 7.84" (199 mm) with 31⁄16" barrel; 8.88" (226 mm) with 4" barrel
Barrel length	21⁄4" (57.15 mm), 31⁄16" (77.79 mm), 4" (101.6 mm)
Cartridge	.38 Special .357 Magnum .327 Federal Magnum .22 LR 9×19mm Parabellum (discontinued) .32 H&R Magnum (discontinued)
Action	Double-Action Revolver
Effective range	33 to 55 yards (30 to 50 meters)
Maximum range	550 yards (500 meters) +/-
Feed system	5/6/8-Cylinder

The Ruger SP-101 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 9x19mm Parabellum), 6-shot (.327 Federal Magnum and .32 H&R Magnum), or 8-shot (.22 LR) cylinder.

History

The Ruger SP-101 was introduced in 1989 as the smaller frame counterpart to the GP-100. Both of these revolvers, together, replaced Sturm, Ruger & Co's long-standing staple in the American firearms market, the Ruger 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.

Features and description

• The SP-101 is currently manufactured in .357 Magnum, .38 Special, .327 Federal Magnum, and .22 LR.
• Barrel lengths 2¹⁄₄" (57.15mm), and 3¹⁄₁₆" (77.79mm) with full underlugs. 4" (101.6 mm) with half underlug.
• Stainless steel
• Transfer bar safety mechanism
  • Firing pin mounted in frame
  • The Transfer bar in the SP101 is connected directly to the trigger.
• Fixed (all calibers) or adjustable (.327 Federal Magnum and .22 LR) sights
• Spurred or spurless (Double Action Only, D.A.O.) hammer

Specifications

• Weight: 2¹⁄₄", 25¹⁄₂ oz. (708g); 3¹⁄₁₆", 27 oz.(765g).
• Barrel lengths: 2¹⁄₄" (57.15mm), 3¹⁄₁₆" (77.79mm), 4" (101.6 mm).
• Double-Action/Single-Action (Double Action Only (D.A.O.), on select models).
• 5-shot (.38 Special, .357 Magnum, 9x19mm Parabellum), 6-shot (.327 Magnum, .32 H&R Magnum), 8-shot (.22 LR)
• Maximum effective range: 33 to 55 yards (30 to 50 meters) depending on barrel length and cartridge load.^{[citation needed]}

Models

Catalog Number	Caliber	Capacity	Sights	Shroud	Barrel Length	Weight	Notes
KSP-221	.22 LR	6	Adj.	Full	21⁄4"	32 oz	Discontinued
KSP-240	.22 LR	6	Adj.	Short	4"	33 oz	Discontinued
KSP-241	.22 LR	6	Adj.	Full	4"	34 oz	Discontinued
KSP-242-8	.22 LR	8	Adj.	Full	4"	34 oz	Adjustable fiberoptic sights
KSP-3231	.32 H&R Magnum	6	Adj.	Full	31⁄16"	30 oz	Discontinued
KSP-3241	.32 H&R Magnum	6	Adj.	Full	4"	33 oz	Discontinued
KSP-32731X	.327 Federal Magnum	6	Adj.	Full	31⁄16"	28 oz
KSP-821	.38 Special +P	5	Fixed	Full	21⁄4"	25 oz
KSP-821DOS	.38 Special +P	5	Fixed	Full	21⁄4"	25 oz	Bobbed hammer made for the U.S. State Department
KSP-831	.38 Special +P	5	Fixed	Full	31⁄16"	27 oz
KSP-321X	.357 Magnum	5	Fixed	Full	21⁄4"	26 oz
KSP-321X-CT	.357 Magnum	5	Fixed	Full	21⁄4"	25 oz	Crimson Trace Lasergrips
KSP-321XL-LG	.357 Magnum	5	Fixed	Full	21⁄4"	25 oz	Crimson Trace Lasergrips, D.A.O.
KSP-331X	.357 Magnum	5	Fixed	Full	31⁄16"	27 oz
KSP-321XL	.357 Magnum	5	Fixed	Full	21⁄4"	25 oz	D.A.O
KSP-921	9x19mm Parabellum	5	Fixed	Full	21⁄4"	26 oz	Discontinued, Uses Moon clips, Not on CA DOJ List
KSP-931	9x19mm Parabellum	5	Fixed	Full	31⁄16"	27 oz	Discontinued, Uses Moon clips

• All models are made of stainless steel.
• Caliber: .357 Magnum SP101s handle all .357 Magnum factory loads and accept factory .38 Special cartridges.
• Spurless-hammer models (Double-Action only) are designated by an "L" in the Catalog Number.

References

• Ruger's SP101 page
• Ruger SP101 -- A Sturdy Rimfire "Secret" by Clair Rees, Guns