052120000 Smith & Wesson K L N Frame All Models Target Trigger .500" Wide NOS

052120000 Smith & Wesson K L N Frame All Models Target Trigger .500" Wide Case Hardened Old Style  New Old Stock *** Firing Pin on the Hammer Only*** Fits Models: 10-9, 13-4, 14, 15-6, 16, 17-6, 19-6, 25-7, 27-4, 29-4, 57-2, 581-1, 586-1 We sell used, new & new old stock Smith & Wesson double action revolver parts. Shoot us an email or give us a call for all you S&W part needs! - USA Guns And Gear Please call or email with any questions! 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 little more info on your revolver. A revolver is a repeating handgun that has a revolving cylinder containing multiple chambers and at least one bar