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Thread: Who actually makes the bolt in the BCG?

  1. #11
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    Quote Originally Posted by Dsm2nr View Post
    Thanks for the clarification. And DPMS was just an extreme example.
    Your post actually made me re-read the OP's post and notice my error. LOL, definitely mis-read it at the very least =] O well, shit happens.
    From TOS ... "buy the shit out of that thing, all the mil spec is just nonsense."

  2. #12
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    Quote Originally Posted by discreet View Post
    Your post actually made me re-read the OP's post and notice my error. LOL, definitely mis-read it at the very least =] O well, shit happens.

    Regardless misreading the OP, as you do seem to have some real world insights perhaps you could enlighten us and share some of your insights going back to the original question. For instance - what is the deal with that Carpenter steel, and for that matter, manufacturing in general ?

    From a consumer perspective, we pretty much know "all" there is to know about receivers, barrels and who makes what and why some are better than others, but when it comes to BCG's, we're still somewhat in the twilight zone. An understatement, considering it's importance in the scheme of things.

    One pretty much has to surrender oneself to whatever brand-name is put on it, without knowing much about the manufacturing process, and why some are better than others, based on nothing other than reputation.
    Which is pretty effective, but not very objective, it seems.

    Apparently just like barrels, there seems to be a healthy balance between art and science, but this is just hearsay, would love to get some factual info.
    Per Ardua ad Astra.
    STS - gone but not forgotten.

  3. #13
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    Quote Originally Posted by polydeuces View Post
    Question for those in the know:
    As title asks - who actually makes the bolt?

    Recall reading that a "batch" of 158 carpenter steel costs something in the range of $500.000, based on which I assume only a limited amount of manufacturers actually have the means to purchase and manufacture the bolt.

    158 Carpenter is a trade name, it's P-6 mold steel. When you say "batch" you are talking from the mill, so what is the least lbs you can buy at what price ? Anything less you go to the distributor.

  4. #14
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    Here is a post I ran across on a machinist forum that may either satisfy or pique some of your curiosity.

    Does anyone know of a "more-readily-available" alternative to Carpenter's Alloy 158?

    We are currently making bolts for a very large AR-15 manufacturer. I have had several other smaller firearms companys contact me looking to purchase these bolts. But the material that we are currently using is supplied to us by our customer. The Carpenter 158 has to be purchased in 20,000 Lb lots and is roughly $5/Lb.

    So I was wondering if there was another type of material out there that had the same chemical properties as the Carpenter 158, but could be purchased in smaller quantities (i.e. 1000 Lbs?) This is 3/4" dia. round bar stock.
    It would appear that in at least this instance the weapon manufacturer paid for and sourced the material for the contracted machine shop to produce the bolts.
    My fear is that ahh, the whole island will ahh, become so overly populated, that it will tip over and ahh, and capsize...
    Hank Johnson (D) GA YouTube

  5. #15
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    good bolts seem hard to come by these days
    Last edited by seabass03; 01-06-12 at 07:44.

  6. #16
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    Quote Originally Posted by seabass03 View Post
    good bolts seem hard to come by these days
    They can be, but we have LMT bolts in stock now!

    http://www.gandrtactical.com/cgi-bin...tion&key=L7A3B



    C4

  7. #17
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    Is the info about the carpenter steel correct, or just another internet fish wives tale?

  8. #18
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    Luke_Y's quote is a great thing to remember the next time someone says "these are made by the same people that make ___________'s!!!"

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