The pins drop in from behind the breech face, with the locks removed. A way simpler design than the pre-1913 bushed firing pins. There are no 're-bounding firing pin' springs in any Smith, whether pre-1913 or the later 1914-1945 production series. If your gun is an extractor gun, make sure the clearance cuts in the extractor lugger bar, one for each barrel, are smooth and deep enough to allow the firing pin tips to clear when you close the gun to cock it. I have firing pins for your gun in my inventory, are your pins broken at the tip? RWTF
