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Permapin for the AR15

Discussion in 'Rifle Country' started by 1lostinspace, Nov 8, 2007.

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  1. 1lostinspace

    1lostinspace member

  2. Jeff White

    Jeff White Moderator Staff Member

    What's wrong with the standard cotter pin type of firing pin retaining pin?

    There are not supposed to be different sized holes in the bolt carriers.

  3. 1lostinspace

    1lostinspace member

    The permapin was the original Stoner design and is far superior, I go though pins like nothing, it's the part most likely to brake.
  4. blackhawk2000

    blackhawk2000 member

    What??? Granted I don't shoot as much as some, but I have at least 10K on my AR, and haven't broke anything yet.
  5. 1lostinspace

    1lostinspace member

    Well I fire about 1000 rounds a month mainly 25 gr Varget 75 grain BTHP it's a bit hot so things get banned around.... Those pins were a way of saving money.
    I think Ill have my gun smith sand the bolt a bit.
  6. blackhawk2000

    blackhawk2000 member

    I've shot 1k in 8 hrs, on several different occasions. No breakage.
  7. jerkface11

    jerkface11 Active Member

    25gr of varget under a 75gr bullet is an overcharge. Maybe that's why you're breaking stuff?
  8. Jeff White

    Jeff White Moderator Staff Member

    I don't believe that in 32 years experience with the M16/AR15 I've ever noticed the firing pin retaining pin to be a high breakage part. I think that I've seen almost everything that can break on one, break.

    Perhaps you should back off on your overpressure load before you get hurt? If I were you I'd take continual breakage of a part that doesn't normally break as a sign that you're pushing things past a limit.

  9. 1lostinspace

    1lostinspace member

    I think I might be doing more damage taking it in and out after shooting to clean it. I clean my gun every time I shoot and it doesn't brake it's just rough going in and out. As far as the 25 gr varget in a 5.56mm chamber at 48,000 cup is not that hot of a load.
  10. blackhawk2000

    blackhawk2000 member

    I'll go one step further and say you are just plain ole FOS.

    Here you claim to have never seen combat: http://thehighroad.org/showthread.php?p=3874525#post3874525

    Yet here you claim to have seen combat, and report the ineffectiveness of .223/5.56 at 150 yds: http://thehighroad.org/showthread.php?p=3874349#post3874349

    Yet here you praise the .223/5.56 at 150 yds: http://thehighroad.org/showthread.php?p=3870133#post3870133

    Here in your quickly locked thread you ask for vets comments on .223/5.56 lethality, even though you have shot at, at least 6 people according to another of your posts: http://thehighroad.org/showthread.php?p=3867780#post3867780

    Here you praise 5.56: http://thehighroad.org/showthread.php?p=3859042#post3859042

    I think you are a troll.
  11. 1lostinspace

    1lostinspace member

    what are you talking about

    we all know that 5.56mm will kill past 150 yards
    I have never seen combat.
    The quote of killing 5 insurgents but not been able to kill the one at 151 is obviously a joke.
    As far as the thread locked about 5.56mm been effective I was trying to get really data to prove it does work.

    Define a troll are trying to say I am trying to sell something???
  12. 1lostinspace

    1lostinspace member

    I am not getting into a flame war with you if you don't know about this permapin thing and can't help please dont insult me or claim that I said I have seen combat.

    Why are you trying to twist things around?
  13. blackhawk2000

    blackhawk2000 member

    All your posts are all over the place. It don't add up.
  14. 1lostinspace

    1lostinspace member

    add up to what?

    Dude you need a beer or something

    your too:cuss:for no reason
    not cool:uhoh:

    I have never said I have seen combat and have never said that 5.56 is not effective maybe you should read the whole thread
  15. ocabj

    ocabj New Member

    That is the biggest waste of $9 I've ever seen in awhile.

    You could have bought 9 standard firing pin retaining pins for that price. And one should last you the life if your barrel.

    If you're breaking FPR pins on a continuous basis, you have a serious issue with your gun.

    I'm not even going to blame your ammo, because I know lots of people, including myself, are shooting pretty hot and heavy loads for the 600 yard line and have no problems with FPR pins.
  16. rero360

    rero360 New Member

    a buddy of mine did indeed have his break on his issued M16, before we got M4s, or he lost it, not sure, either way he used a piece of a paperclip in place of the pin for a long time with no ill effects.
  17. wideym

    wideym Member

    I've never had any firing pin retainers break on my ARs or when I was an Armorer in an Infantry company. Guys lost them sometimes, now that I think about it the only part that ever needed replacing were cracked hand guards and a barrel the XO bent around a tree(that was a sight).

    Permapins are like those anti walk pins vendors sell, overpriced junk nobody will ever need, but sound so cool you have to buy one.
  18. 1lostinspace

    1lostinspace member

    well like I said they don't brake but tend to be finicky going in and out.
  19. Coronach

    Coronach Moderator Emeritus

    Uh. Dude. You're breaking parts in your rifle that don't normally break. This is one of the signs of a load that is too hot.

    You can do what you want. You can continue to abuse your AR, have your gunsmith alter the bolt to make the non-spec part fit, and then wonder why something else breaks in a few more thousand rounds. Or, you can replace the broken cotter pin with another one and use a standard load and go for a long time with no parts failures.

    Your choice.

  20. ugaarguy

    ugaarguy Moderator Staff Member

    It's a cotter pin - it's held in by friction - of course you'll feel some resistance taking them in and out. It could also be that the FPR hole on your bolt is on the small side of tolerances, and the FPRs you've been buying are made on the large side of the tolerances by that particular mfr. That would add to the tight feeling you get with removal and insertion, and explain why the permapin won't fit. Heck the FPR hole on your bolt could be out of spec and too small. Have your gunsmith thoroughly check your rifle to see if there might be some problem from a damaged or out of spec part.

    As for the FPR being likely to break my limited experience runs against it, and two very experienced folks here have already told you it's not a high breakage part.

    You'd also do well to listen to the folks who are warning you to back off on the hot handloads. The AR15 is a much more robust design than many give it credit for, but that's not a valid reason to put potentially dangerous handloads through it. But hey it's your face when an over pressure load sends hot gases through the charging handle port, or worse.
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