Similar in appearance to old model, but has the new hammer block safety system. Frame has two pins instead of three screws. Opening the loading gate frees cylinder stop for loading. Barrel lengths are 4.625", 5.5", 6.5" and 9.5". Sights are adjustable and finish blued. Grips are walnut, with a medallion. An interchangeable .22 Magnum cylinder is supplied. Introduced in 1973 and currently in production.

Same as standard blued model, but made from stainless steel. Offered with 4.625", 6.5" and 9.5" barrel. Note: Add 40% premium for pre-warning pistols (1973-1976) with 4.625" or 9.5" barrel; 100% premium, at least, to NIB prices for pistols with 4.625" barrels with "made in the 200th year of American Liberty" rollmark on the barrel.

Produced in blue and stainless for one year only in 4.625, 5.5", 6.5" and 9.5" barrel lengths. Very low production on this model.

First made as drift adjustable rear sight (500 each in 4.625", 5.5" and 6.5" blue); and now a catalogued item as a pinched frame style fixed rear sight. Barrel lengths offered in 5.5" and 6.5" lengths. Finish blued or glossy stainless steel. Rear sight fixed. Weights between 32 and 38 oz. depending on barrel length and cylinder.

A stainless steel grip frame and balance blued. Walnut grips, with medallion insert. Barrel 6.5". Furnished with a walnut case with a centennial medal insert. Manufactured 15,000 in 1975.

Single Six chambered for .32 H&R Magnum cartridge. First 800 pistols marked with SSM" on cylinder frame and will bring a slight premium. Sold from 1984 to 1997. Adjustable sights.

Introduced in 2000. Revolver chambered for .32 H&R Magnum cartridge. Fitted with 4.625" barrel. Offered in blue or stainless steel. Short (.250" shorter) simulated ivory grips. Vaquero-style frame, with fixed sights. Values shown are for stainless. Note: Deduct 25% for blued.

Introduced in 2003. Features 4.625" barrel, with blued finish. Top of barrel rollmarked "50 YEARS OF SINGLE SIX 1953 TO 2003". Comes standard with both .22 LR and .22 WMR cylinders. Cocobolo grips, with red Ruger medallion. Packaged in a red plastic case, with special "50 Year" label. Offered only in 2003.

Chambered for .22 LR and a separate cylinder for .22 WMR cartridge. Barrel lengths 4.625", 5.5", 6.5" and 9.5". Rosewood grips. Adjustable or fixed sights. Blued finish, except optional stainless steel on 5.5" or 6.5" revolvers. Weight 35 oz. depending on barrel length. Note: Add $80 for stainless steel model.

As above, with 6.5" barrel. Chambered for .17 HMR cartridge. Weight 35 oz. Introduced in 2003.

Chambered for .17 HMR/.17 Mach 2. Fitted with 7.5" barrel, with adjustable rear sight. Stainless steel finish, with black laminate grips. Integral barrel rib machined for scope rings. Weight 45 oz. Introduced in 2005.

10-shot version of Single Six, with 5.5" barrel and walnut Gunfighter grips. Other features include satin stainless finish and Williams adjustable fiber-optic sights. Introduced in late 2011. A 9-shot variation with 6.5" barrel introduced in 2013 as Single-Nine.

Identical to Single-Ten, except chambered for .22 Win. Magnum rimfire. Has 9-round cylinder.

Distributor exclusive model (from Lipsey's) is chambered for .327 Federal Magnum cartridge, with a 7-round cylinder. Stainless revolver has 5.5" barrel, adjustable sights and wood grips. Introduced in 2015.