Smith & Wesson K Frame Model K22 Thumb Piece & Nut Used Part K22-3 Model 500 357 4" 6 Shots Blue

357 4" 6 Shots Blue Mainspring

Durable Build: Heavy-duty construction weighing 4 lbs

Compatible with both the original M&P series and the M&P M2

Proven Design: Based on authentic WWII-era specifications used by military armorers

Model numbers began in 1957–58

Smith & Wesson K Frame Model K22 Thumb Piece & Nut Used Part K22-3 Model 500 357 4" 6 Shots BluePart # K22 3 Smith & Wesson K Frame Model K22 Thumb Piece & Nut Used Part Please call or email with any questions! We sale Smith & Wesson pistol and revolver used, new & new old stock refurbished & new parts. 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