Smith & Wesson Model 66 K Frame .357 Magnum Cylinder w/ Extractor Non-Recessed Stainless Steel Used 6658B

Smith & Wesson Model 66 K Frame .357 Magnum Cylinder with Extractor old style— Non-Recessed, Stainless Steel, Used

Replace your worn or damaged cylinder with this factory S&W part. The non-recessed stainless steel cylinder holds 6 rounds of .357 Magnum (also compatible with .38 Special) and comes with the extractor included. Sourced from a used firearm and inspected for function.

Part Number: 6658B

Compatible Models:

•  (all barrel lengths)
  
• Smith & Wesson Model 66-2
• Smith & Wesson Model 66-3

Note: This cylinder is caliber-specific. It is NOT compatible with Model 10, 13, 14, 15, 19, 64, or 67 cylinders, which use different part numbers.

Specifications:

• Frame: K Frame
• Caliber: .357 Magnum / .38 Special
• Capacity: 6 Shot
• Material: Stainless Steel
• Cylinder Type: Non-Recessed
• Condition: Used
• Includes: Extractor
• Old style
• Part #: 6658B

How to identify your S&W model number: Swing out the cylinder and look behind the yoke on the frame. Model numbers were introduced in 1957–58. If no number is present, contact us with your serial number and we'll help identify your revolver.

Installation Note: Cylinder replacement requires disassembly and reassembly. Installation and fitting by a qualified gunsmith is recommended. Factory replacement parts are manufactured to original S&W specifications and tolerances.

USA Guns And Gear — Your source for new, used, and new-old-stock Smith & Wesson parts. Questions? Shoot us an email.