I used to buy it from a local auto parts suppler and they would give you a specification sheet that came with it. High Carbon steel in the form of Water hardening and Oil hardening Drill Rod is readily available. Low carbon steel would bend and deform with use. It is what I have and working properly is exactly the firearm I need for a turkey hunt this fall. With layoffs In the near future I would rather not replace it if I can make it function reliably. It must happen often as none of the parts sellers have one in stock. And as is fairly commen with this model, the firing pin broke in two. I am aware of all of the weakneses of the firearm. I would think I could have several machined from mild steel for the cost of one in stainless. What material would be the best to machine a new firing pin from? Mild steel or stainless? If mild steel, would the surface the hammer strikes need to be hardened or heat treated? Stainless would certainly be strong/hard enough, but more difficult/expensive to machine. May yet have questions as i get further into this. If not, the Mossberg 500 is economic enough for a replacement. Hopefully it will be as reliable as it was for the first 3 years. I have until the first of October to repair and field test for reliability. I understand gunsmiths wouldn't touch them because the things would break while in the shop for another repair. It was only this year that I noticed that the firing pin was broken. Actually this gun functioned well for the first couple of years until the cartridge cut off issue occurred. I had repaired the cartridge cut off years ago as a lot of owners have in the past. My barrel has the 'O' indicating that it was originally shipped with the revised barrel. And yes, I had seen the recall years ago. I planned to call them on Monday but expect that they just don't sell/have them. That would cost almost as much as the current retail value of the entire gun. I figure the only way to get one is to buy an entire bolt. Tony - I had looked at LSG but they don't list the pin at all. I have time on this one, so a little more reading on the Lasalle and 4140 and I should be able to do this. I think I found the 1095 on Brownells page.
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