57179 Smith & Wesson N Frame Model 57 Thumb Piece & Nut Blue Steel .41 Magnum Used N197 Responsible for striker movement to

Responsible for striker movement to fire the handgun

Function: Trigger return mechanism

Model Caliber Size Compatible M&P 9 M2

M&P Extractor - 9mm/

Driveways and access roads

57179 Smith & Wesson N Frame Model 57 Thumb Piece & Nut Blue Steel .41 Magnum Used N197 Responsible for striker movement toPart# 57179 Smith & Wesson N Frame Model 57 Thumb Piece & Nut . 41 Magnum Blue Steel Old Style Used Part We sell used, new & new old stock Smith & Wesson double action revolver parts. Shoot us an email or give us a call for all your S&W Gun needs! USA Guns And Gear How to determine the model number of your Smith & Wesson Revolver. Swing out the cylinder , check behind the yoke on the frame for a MODEL NUMBER. Model numbers began in 1957 58. So if