One of the guns dad left was an Erma EP-22, Luger clone. It had been in storage for 25+ years before I took possession of it. I tried firing it, but it would just go click. I finally got it apart. It had some corrosion along the frame where the barrel was supposed to slide on. I cleaned that up and realized that the firing pin was broken. (See diagram - part #36 had no pin). I found one and also ordered #11. The trigger was unreliable because #11 would ride up and over #6, instead of pushing it. Turns out there was a groove worn in the grip (#21/22). I filled the groove with epoxy, let it dry, and sanded it smooth. I took it out Friday and got it to shoot when I pulled the trigger, but had plenty of failure to loads. I took it apart yesterday to clean it some more, and when I went to put it back together, the barrel broke (#24) right behind the hole on the right side rear where the pin goes through. I guess I'll just put the broken firing pin back in and use it as a display piece.