The Smith & Wesson Strain Screw, Round Butt For S&W 10, 12, 13, 17, 19 Blued is a factory replacement part designed to restore proper mainspring tension in classic Smith & Wesson revolvers. This blued strain screw is built to original specifications, ensuring a precise fit and reliable performance in compatible round-butt K-frame models.

Ideal for shooters who are experiencing light primer strikes or inconsistent ignition, this strain screw helps return your revolver to dependable operation for range use, competition, or regular training. Whether you are maintaining a well-used duty gun or preserving a custom PPC revolver, this genuine-style replacement reflects Smith & Wesson’s long-standing reputation for thoughtful engineering and durable components.

• Manufacturer: Smith & Wesson
• Model: Strain Screw, Round Butt For S&W 10, 12, 13, 17, 19 Blued
• Finish: Blued
• Quantity: 1
• Make Model Fit: Smith & Wesson 10, 12, 13, 17, 19