Smith & Wesson Model 66- K Frame .357 Magnum Cylinder w/ Extractor Non-Recessed Stainless Steel Used 66A58

Smith & Wesson Model 66-4 to 66-8 K-Frame .357 Magnum Cylinder with Extractor | Stainless Steel (Newer Style)

Upgrade or repair your K-frame revolver with this genuine factory Smith & Wesson replacement cylinder. This stainless steel, 6-shot cylinder comes complete with the newer-style extractor star, making it the perfect drop-in replacement part for modern Model 66 iterations.

Because it features the updated extractor design introduced during S&W's mid-90s engineering transition, this assembly is specifically configured to fit newer generation, non-recessed K-frame magnums.

Compatible Models

This cylinder assembly is explicitly compatible with the following Smith & Wesson K-Frame (.357 Magnum / .38 Special) engineering variants:

• Model 66-4 (1994 production update)

• Model 66-5

• Model 66-6

• Model 66-7

• Model 66-8

⚠️ Compatibility Note: This cylinder features the newer-style flat-sided/star extractor configuration. It is not a direct fit for older, legacy variants (Model 66, 66-1, 66-2, or 66-3) which utilize the older style extractor alignment pins, nor will it fit standard blued K-frames like the Model 19 without modification.

Specifications

• Frame Size: K-Frame

• Caliber: .357 Magnum / .38 Special

• Capacity: 6-Shot

• Material: Stainless Steel

• Cylinder Type: Non-Recessed

• Condition: Used (Inspected for structural integrity and smooth indexing)

• Includes: Complete Extractor Star Assembly

Installation Note

While factory replacement parts are manufactured to strict original Smith & Wesson specifications, minor timing adjustments and hand-fitting are occasionally required for revolver cylinders. Installation by a qualified gunsmith is highly recommended to ensure safe timing and proper headspace.