This is the Nth time I've posted this.....the firing pin retaining pin [keeps the firing pin in the FP channel] takes alot of abuse. My Ruger LC9 had a retaining pin break after alot of dry firing. Ruger fixed it and their advice: "use snap caps with a spring loaded primer when dry firing". That is when I began using Tipton snap caps. I will continue using Tipton snap caps in all pistols.