Model 66 Manufacturers Smith & Wesson Designer Smith & Wesson Weapon type Revolver Caliber .357 Magnum /.38 special Action Double-action Barrel length 2 1/2, 3, 4, 6 inches Weight 32 ounces

Introduced in 1972, the model 66 was a K-framed six shot .357 Magnum revolver. It is a stainless steel version of the Model 19 and was initially available with a 4" and 6" barrel. In 1974 a version with a 2 1/2" barrel and round grips was offered. It comes with a red/orange insert front sight and a white outline rear adjustable sight. The double action trigger on this revolver is extremely smooth. It fires .38, or .357 Magnum ammunition.

Variants

66 - no dash - introduced 1970.

66-1 - 1977, changed the gas ring from the yoke to the cylinder.

66-2 - 1982, eliminated pinned and recessed, slightly lengthened cylinder.

66-3 - 1986, new yoke retention system / radius stud package / hammer nose bushing / floating hand

66-4 - 1994, change rear sight leaf, drill and tap frame, introduce Hogue grips, change extractor.

66-5 - 1998, change in frame design: eliminate cylinder stop stud/eliminate serrated tangs/change to MIM hammer with floating firing pin/change internal lockwork.

66-6 - 2002, introduce internal lock.

2005 - discontinued.