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Thread: 2XTM 9mm Build Progress

  1. #11
    GuncoHolic 2ndAmendican's Avatar
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    Lets try this again:
    Attached Images Attached Images
    Enforcement, NOT Amnesty!!!!!!

    "If they’re going to come here illegally, apply for & receive assistance through a corrupted Government agency encouraging this lawless behavior, work under the table & send billions of dollars each year back to their families in Mexico, while bleeding local economies dry, protest in our streets waving their Mexican flags DEMANDING rights, while I have to press ’1′ for English, then they need to be shipped back to where they came from!" -Chad Miller

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    GuncoHolic 2ndAmendican's Avatar
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    Quote Originally Posted by Viper Dude View Post
    Hey guys, mild steel doesn't harden from simple heating and chilling. It lacks the carbon content. Case hardening may help with special surface chemical treatment (carbon rich stuff).

    VD
    OK VD, I'm confused now. So the heat treat method that I, and virtually every AK home builder (that builds from a flat) has been using does not work???? Same procedure from Toten Kopfs CDROM, and all of the various internet published procedures. Basically heat area to cherry red, then quench in oil or water. Remove scale with a wire brush then heat area to a grayish purple color and let air cool.

    I've built about 5 receivers from 4130/4140 sheet from McMaster Carr for myself, and bent a few blanks from this for other folks on Gunco, and have had no problems(both .040" and .050"). Not to mention all of the Tapco flats, and AK Builder flats that I have done this method on. Now mind you, I don't have thousands of rounds through any of my 25+ builds, so I don't know how long it takes for a hole to egg out, or an ejector tip to get peened into oblivion. Have there been failures of these areas from the procedure that I use? If so, I'd sure like to know and change my procedure.

    I have actually been looking at some of the case hardening products, (Brownell's and Cherry Red) mainly for firing pins, but was thinking about trying it on the FCG holes as well.
    Enforcement, NOT Amnesty!!!!!!

    "If they’re going to come here illegally, apply for & receive assistance through a corrupted Government agency encouraging this lawless behavior, work under the table & send billions of dollars each year back to their families in Mexico, while bleeding local economies dry, protest in our streets waving their Mexican flags DEMANDING rights, while I have to press ’1′ for English, then they need to be shipped back to where they came from!" -Chad Miller

  3. #13
    No Hope For Me Coils's Avatar
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    I've built about 5 receivers from 4130/4140 sheet from McMaster Carr for myself
    Hey guys, mild steel doesn't harden from simple heating and chilling. It lacks the carbon content.
    The difference is "mild steel" vs 4130/4140 (and similar steel), they need to be hardened in different ways.


    The build is looking good, I got to stop screwing around and get mine done.
    "Government is not the solution to our problem, government is the problem" Ronald Reagan

  4. #14
    GuncoHolic 2ndAmendican's Avatar
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    Quote Originally Posted by Coils View Post
    The difference is "mild steel" vs 4130/4140 (and similar steel), they need to be hardened in different ways.


    The build is looking good, I got to stop screwing around and get mine done.
    Oh, ok, I see. People are differentiating between "mild steel" and "4130/4140 steel". I have always used the term "mild steel" to include 1018, 4130, 4140, and a few others that are easily formed, and need to be heat treated to "fix" their final shape and or strength/wear properties. It has never been questioned until today. Been using that right or wrong for 30 years, in the aviation industry no less. LOL. . I guess I will have to be more specific in the future.

    Definitely gotta get yours going Coils. You gonna use that blank I bent up?? If so it should work out great. I was concerned about where the jig through bolt went, and whether it would interfere, but from what I see on mine, it should be dang near perfect.
    Enforcement, NOT Amnesty!!!!!!

    "If they’re going to come here illegally, apply for & receive assistance through a corrupted Government agency encouraging this lawless behavior, work under the table & send billions of dollars each year back to their families in Mexico, while bleeding local economies dry, protest in our streets waving their Mexican flags DEMANDING rights, while I have to press ’1′ for English, then they need to be shipped back to where they came from!" -Chad Miller

  5. #15
    No Hope For Me Coils's Avatar
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    Just trying to clear up the confusion
    Well all the different grades of steel gets me confused, too many out there and they all have different characteristics.

    Yes I was going to try using one of those blanks I got from you. Got to get some other projects (non-gun related) out of the way first.
    "Government is not the solution to our problem, government is the problem" Ronald Reagan

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    Gunco Regular Johnny 5.56's Avatar
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    Quote Originally Posted by 2ndAmendican View Post
    Lets try this again:

    That looks NICE!




  7. #17
    GuncoHolic 2ndAmendican's Avatar
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    Thanks guys!! Unfortunately some major medical bills just hit the mailbox and the project is stalled. I need to buy a couple of drum mags because the next step is to fit the mag(s) to the magwell, before fitting the magwell to the receiver. Unfortunately that aint gonna happen for awhile, unless somebody has some extras they are willing to let go real cheap. Dangit!!!!
    Enforcement, NOT Amnesty!!!!!!

    "If they’re going to come here illegally, apply for & receive assistance through a corrupted Government agency encouraging this lawless behavior, work under the table & send billions of dollars each year back to their families in Mexico, while bleeding local economies dry, protest in our streets waving their Mexican flags DEMANDING rights, while I have to press ’1′ for English, then they need to be shipped back to where they came from!" -Chad Miller

  8. #18
    Gunco Regular Johnny 5.56's Avatar
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    Quote Originally Posted by 2ndAmendican View Post
    Thanks guys!! Unfortunately some major medical bills just hit the mailbox and the project is stalled. I need to buy a couple of drum mags because the next step is to fit the mag(s) to the magwell, before fitting the magwell to the receiver. Unfortunately that aint gonna happen for awhile, unless somebody has some extras they are willing to let go real cheap. Dangit!!!!

    Sorry to hear that. Can the rifle use Suomi M31 36rd 9mm stick mags? Centerfire has them for $16 each.

    Suomi M31 36rd 9mm Mag

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    Gunco Veteran jreifsch80's Avatar
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    chris, i finally got together with my buddy and got you that spare beater trunnion i'll mail it out today or first thing in the morning

    edit: dang that thing's itching for a galil stock lol you know turbo has the trunnions he made for an akm that take galil stocks they're great i bought a couple but had him narrow them down for 1.5mm receivers
    Last edited by jreifsch80; 01-11-2012 at 02:34 PM. Reason: to add
    "Always forwards, never backwards." Erich Honecker

  10. #20
    GuncoHolic 2ndAmendican's Avatar
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    Thanks Johnny. Yeah you can set it up for both drums and sticks, but it's easier to go drum only. CFS has them for $24.99.

    Thanks Justin. Yeah it would be great to have a Galil trunnion/folder on there.
    Enforcement, NOT Amnesty!!!!!!

    "If they’re going to come here illegally, apply for & receive assistance through a corrupted Government agency encouraging this lawless behavior, work under the table & send billions of dollars each year back to their families in Mexico, while bleeding local economies dry, protest in our streets waving their Mexican flags DEMANDING rights, while I have to press ’1′ for English, then they need to be shipped back to where they came from!" -Chad Miller

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