Smith & Wesson K Frame Model 15 Hand .38 Special Old Style Used Part 15129 M&P 5.75 Series 40 S&W — ✗ No

40 S&W — ✗ No

Part #: 203100000

Enhanced Reliability: Extra power firing pin and extractor springs for improved performance

22 Long Rifle with square butt configuration

It is not interchangeable with the M&P 9 Compact

Smith & Wesson K Frame Model 15 Hand .38 Special Old Style Used Part 15129 M&P 5.75 Series 40 S&W — ✗ NoSmith & Wesson K Frame Model 15 Hand . 38 Special Part #15129 Condition: Used (Old Style) OEM Smith & Wesson Factory Part Compatibility Smith & Wesson K Frame Model 15 Combat Masterpiece . 38 Special Old style configuration verify against your revolver before ordering Part Details OEM Smith & Wesson factory original hand (cylinder rotation pawl) The hand engages the ratchet on the cylinder to rotate it into alignment with each trigger pull or hammer