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copterdrvr

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  1. I ordered two titanium pins from Iron City it seems like yesterday (not really) and they arrived TODAY! They are really finely machined and I immediately installed one of them in my bolt. They are definitely well machined pins with no sharp edges on the shaft anywhere and very finely finished. They make the other pins I received from another manufacturer look like crap.....
  2. Anybody have any idea why the 9's break so many firing pins? I have numerous AR's and I've NEVER broken a pin in any of them and shot the heck out of them all !!!!
  3. Thanks for your reply! Yeah, they are out of stock for that item-of course!!!!
  4. Thanks for the info! I never heard of Iron City-they actually had titanium pins in stock and I ordered two. Curious about how the springs can get bent or broken without the pin breaking-is that because of the finish/contour of the inside of the bolt? Also, when I first put the rifle together I did a BUNCH of dry firing in general AND with swapping triggers-could that have an "impact" (so to speak!) on breaking the firing pin with a relatively low round count?
  5. Thanks-yeah, it's out of stock and I'm on the "notification " list......
  6. Thanks for the reply. I have another AR9 bolt that I tried but it has an AR style extractor which cuts a slot into the side of the bolt. I'm a Lefty and I found that when I used this bolt I had ejecta from the action striking my face. I assume it was following the cut in the bolt which is .17 inch deep. ANYWAY, I pulled the firing pin out of it to try in the original bolt and noticed it had a slightly different location of the taper where it goes from its thickest to thinnest transition. I also looked at the tips of both and they looked the same. Just to make sure, I used the shor
  7. Come to think of it, the reason that the two opposing pieces of firing pin look so smooth and polished is because it's been broken for a while and the two pieces slamming together have peened each other smooth???????
  8. I shot in my local club USPSA match last night and had a few "failures to fire" during the three stages we shot. When I got home I pulled the bolt and found that the firing pin was broken right at the spot where the firing pin is machined down to a smaller diameter. Two questions-is this where it normally breaks, and more importantly, how many rounds do you put down the tube before you change it? Unfortunately I don't remember how many rounds I have through the rifle but I'm assuming it's around 1500. Also, how many rounds do most of you usually get out of a pin before it break
  9. I'm using the Kynshot HD buffer and I now realize that neither of the springs are fully compressing so it's not an issue. Should have figured that out on my own!!!!
  10. Well, you're absolutely correct and my error was assuming that the rifle length spring would "bottom out" or reach compression BEFORE the hydraulic buffer bottomed out (because it's in a less than rifle length receiver extension) and my own observations obviously proved that is an incorrect assumption. Thanks for the response!
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