I have cleaned up a lot of Husqvarna hammerguns, Models 17, 20, 34, 48, 51, 52, 100, and 103, all of these have springs infront of the FP/striker. I just made firing pins/strikers for a Baker hammerless and it has springs in front of the firing pins. I have seen hammerless L.C. Smiths with and without them. The Baker has a stop screw to retain the FP/striker, the LC Smith doesn't. FWIW