NB179F Smith & Wesson N Frame Model 27 Thumb Piece & Nut .357 Magnum J frame This timing must be perfect

This timing must be perfect for safe and accurate operation

Striker Sleeve

Part Number: 05770000

Protect your property with this classic embossed tin sign

Ready to Mount: Pre-drilled holes for easy installation

NB179F Smith & Wesson N Frame Model 27 Thumb Piece & Nut .357 Magnum J frame This timing must be perfectNB179F Smith & Wesson N Frame Model 27 Thumb Piece & Nut . 357 Magnum 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 there is no model number then your revolver may be older than 1957 58. In this case we can possibly still find the part you need with the serial # . If this is the case contact us and we will need a