The Smith & Wesson Mainspring Swivel for S&W J-Frame is a factory replacement component engineered to keep your revolver’s action running smoothly. This small but critical part is designed specifically for J-Frame models, offering a precise fit that maintains the original feel and reliability of your Smith & Wesson revolver.

Ideal for owners who want to refresh worn internal parts or complete a proper repair, this mainspring swivel helps ensure consistent ignition and dependable performance with popular cartridges such as .357 Magnum and .38 Special. Whether you are maintaining a trusted carry gun or a well-used range revolver, using genuine Smith & Wesson parts supports long-term durability and confidence in your firearm’s operation, reflecting the manufacturer’s longstanding reputation for quality craftsmanship.

• Manufacturer: Smith & Wesson
• Model: Mainspring Swivel For S&W J-Frame
• Material: Polymer
• Color: Matte Black
• Make Model Fit: Smith & Wesson J Frame
• Cartridge Compatibility: .357 Magnum, .38 Special
• Quantity: 1