Ruger Single-Six

Ruger Single-Six
Ruger New Model Single-Six (stainless) on top and Ruger "Old Model" Single-Six (blued) on bottom.
Type	Single action
Place of origin	United States
Production history
Designer	Sturm, Ruger
Designed	1953 (Old Model) 1973 (New Model)
Manufacturer	Sturm, Ruger & Co.
Unit cost	$534[1]-754[2] (MSRP)
Produced	1953–1973 (Old Model) 1973–present (New Model)
No. built	Over 700,000 (Old Model)[3] Over 1,057,000 (New Model, as of 1993)[4]
Variants	Old Model, New Model
Specifications
Mass	32–40 oz (910–1,130 g)[5]
Length	10.25–15 in (260–381 mm)[5]
Barrel length	4.625 in (117.5 mm) 5.5 in (140 mm) 6.5 in (170 mm) 9.5 in (240 mm)
Cartridge	.22 LR, .22 WMR, .17 HMR,[6] .32 H&R Magnum
Barrels	6-groove[5]
Action	Single-action revolver
Feed system	6-round cylinder[5]
Sights	Fixed or adjustable iron sights[5] (the Hunter model has provisions for mounting a scope)[6]

The Ruger Single-Six is a single-action rimfire revolver produced by Sturm, Ruger & Co. The Single-Six was first released in June 1953.^[7]

The Single-Six is currently produced as the New Model Single-Six. The term "New Model" simply means that this model includes Ruger's transfer bar mechanism for increased safety, allowing one to carry the revolver safely with all six chambers loaded. Prior to 1973, the Single-Six was produced without the transfer bar mechanism, making it less safe to carry with all six chambers loaded, and with the hammer resting on a loaded chamber. The transfer bar safety allows the revolver to fire only when the trigger has been pulled. Ruger provides the transfer bar safety upgrade free of charge for owners of any old model Single-Six,^[8] though this may come with a significant trigger-feel penalty.^[9]