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70 Posts
I bought an S40 yesterday and like my brand new S9 it is having the battery click issues. I saw someone had posted the video of polishing up the firing pin where it rolls over the roll pin, to a point I do believe that this has SOME to do with the issue. I believe the REAL issue is the firing pin spring itself. People have mentioned that when the firing pin is in the cocked position it is fighting against the recoil rod spring, I do not think so. I think that the firing pin spring collar and spring are binding up in the firing pin itself. I removed both the firing pin and spring then basically made the 2 do the hanky panky. I can feel the spring and spring lock grinding and catching on the inside of the firing pin even when I manually rack the slide. I pulled the spring out, cleaned the firing pin out and oiled but the grinding is still there. After looking closer at my spring it almost seems like it is just slightly too long for the rod it is attached too as I can see it is quite wavy, I also notice that the spring collar is very sharp. From here I did an experiment and put everything back together minus the firing pin and spring and when I rack the slide, no grinding, no hangup and no clicking in and out of battery, I obviously could not pull the trigger because their is nothing for the firing pins release mechanism to attach itself too. I put the pistol completely back together again and it will not fully seat in battery and the grinding is back. I did order a BT a set of the striker spring bushings for my S9 but may have to try it on the S40 instead. To me there is no way that the striker spring is working against my recoil rod spring as that spring is STOUT. The problem is in the spring setup itself or the chamber for the striker is to narrow in my particular striker and it is causing semi solid lockup. All the issues are happening when that striker and striker spring are engaged. I will try to get some pics ASAP.


