""""........If you are only concerned about protecting the firing pin during repeated dry firing, then a rubber O-ring in the hammer well at the rear of the slide should more than suffice:""""
O Ring! I sure like that idea! I'll try that in the 45 auto, that O ring would probably stay in place when the slide was racked. It's a cheap solution, would be good to use if somebody is worried about it. I dry fire my Glock 17 all the time no problem. Xray