Headspacing is to short?

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  • John from MD

    American Patriot
    MDS Supporter
    May 12, 2005
    22,916
    Socialist State of Maryland
    I currently get mine from Spinta Precision and am very happy with them. I used to use Bushmaster quite a bit and didn't have any problems with their barrels either.
     

    outrider58

    Eats Bacon Raw
    MDS Supporter
    Jul 29, 2014
    49,995
    I had sent a email asking to return the barrel, in the mean time we're do you guys get your barrels from?
    Also sorry about not listening to you guys, I figured that the guy who manufactured the barrels would know what he was talking about but literally everybody who responded said he was incorrect and that it's dangerous to fire so I would like to thank you because if I would have only listened to the guy at Dez I would only have half of my face right now.

    Noveske and Rainier. Neither are cheap. For my cheap bbs, I always used DEZ, but I think that may have to change.
     

    ShaggySDG

    Member
    Dec 16, 2016
    16
    Baltimore, MD
    Noveske and Rainier. Neither are cheap. For my cheap bbs, I always used DEZ, but I think that may have to change.

    They are a tab bit expensive lol.

    Every site I try and find a barrel on there all out-of-stock but I finally found one. Does anyone have experience with MAS Defense barrels also whats your opinion on Stainless Steel vs Chrome Moly Steel? I read that SS "flakes" so it loses accuracy suddenly were CMS would slowly wear.
     

    outrider58

    Eats Bacon Raw
    MDS Supporter
    Jul 29, 2014
    49,995
    Look at Rock River Arms. They make a decent CM barrel. I have one that shoots great. These are the only barrels I have personal experience with(the four previously mentioned), but there are many other good, affordable barrel manufacturers out there.
     

    44man

    Ultimate Member
    MDS Supporter
    Feb 19, 2013
    10,145
    southern md
    PSA has some reasonably priced barrels, as well as some that are expensive as all get out sometimes, and they also have some very inexpensive barrels. its all about what you want out of a barrel. match grade = expensive most of the time, just a shooter?= get what you can afford.
     

    ShaggySDG

    Member
    Dec 16, 2016
    16
    Baltimore, MD
    The owner of Dez Arms called me personally to explain that he makes the barrels personality and test fires each one. He understood my concerns so he wanted me to send him my barrel, bolt, and a round so he can check headspacing again and test fire it to make sure it's correct.

    If anyone is interested I'll post again when he gets back to me or when I receive the barrel.
     

    Doco Overboard

    Ultimate Member
    Im not an AR guy but enjoy reading all the informative information about them on this site. Alot of good advice has been given to help solve your problem. First off to me it sounds like you have components from two different manufactures in an attempt to safely chamber a round, and others will correct me if my wrong but I wouldn't start with a barrel assembly and bolt that weren't matched from the same bunch if that happens to be the case here. Especially for my first build. Thats just me but others with practical experience will know what works and with what. In your attempt to fix your problem you found minimum spec ammo that was effectively resized to your current chamber by repeated attempts to close the bolt with the aid of the buffer or action spring. Not a good spot to be in for a number of reasons that could be dangerous and at the very least hard on the rifle. It is not uncommon for a new bolt fit to be tight on initial break in but in your case it seems as if you have an interference fit due to plus or minus parts tolerance accumulation or a combination of the same, an inadequately reamed chamber or some other anomaly. The barrel maker/smith should have immediately told you to return the parts so he could check his work and make necessary corrections. For all we know the finish reamer may have been at the end of its useful life and should be turned into a rougher and if he did test fire it that may have been done with a test/bench bolt group that has been subjected to some wear. The answers he gave you sounded like lip service to me. Do your self a favor and don't fire the rifle until someone competent who knows what they are looking at it positively proves the chamber or identifies the problem area.
     

    ShaggySDG

    Member
    Dec 16, 2016
    16
    Baltimore, MD
    Okay, so a little update so far, I shipped the package with everything they requested and to the address they provided also googled the address to make sure I had it correct and it did say it was Dez Arms.
    So it was supposed to be delivered yesterday (Wednesday) and the tracking updated at 11:30am saying the business was closed so ups held the package. So I called Dave's personal phone because he told me if I had any problems to call him number directly so I did it was around 8:00 pm (they are 1 hour behind) and it rang once and he hit the bitch button which is understandable its out of town number and it's late so I just shrug that off (I did leave a voice mail).
    So the next day I figured that the business might be closed for the holidays so I text his number introduce my self and apologizing for calling late yesterday and informing him that I would change the delivery date to next week so my package doesn't get sent back to me. He text me a bit later saying that they are open so I check the tracking again to make sure they delivered it but once again ups reported that the business is closed again.
    So I had text him again saying that the package failed to be delivered again and sent him the tracking number.
    He hasn't gotten back to me yet, I'll just edit this post when (if) they get back to me.

    Edit: Okay, so the package got delivered later today
     
    Last edited:

    J.T

    Ultimate Member
    Jul 23, 2012
    1,081
    MD
    Tolerance stacking is a definite issue, even with top of the line expensive parts. I had a $1100 barrel/bcg with slightly tight head space. Luckily it worked itself out after 1 mag and now had good head space
     

    Sticky

    Beware of Dog
    MDS Supporter
    Mar 16, 2013
    4,502
    AA Co
    Tolerance stacking is a definite issue, even with top of the line expensive parts. I had a $1100 barrel/bcg with slightly tight head space. Luckily it worked itself out after 1 mag and now had good head space
    Exactly and this is why any decent gunsmith won't let one out of his hands without verifying the headspacing. Many '556' barrels will only pass muster on a 223 gauge when new until they are shot in a bit more..
     

    starmetal

    Member
    Apr 5, 2017
    97
    Those that say DEX ARMS was blowing smoke or that they never heard anything like they explained, or it's confusing....more then likely have never been in the industry to know what they are talking about. For most of us there are three headspace gauges: No Go, GO, Field. Well there are more especially for AR manufacturers. One is an assembly headspace gauge or manufacturers headspace gauge and is used during assembling the rifle. It could be considered a minimum Go gauges. DEX ARMS told you the truth. They are assembled a "little tight" and after a few rounds the parts wear in and are well within the GO limits. Colt also have a gauge that they use if the bolt on an AR 15 closes on a NO GO gauge and it use is to show if the rifle is safe and still serviceable.

    The internet forums are one of the worse places for correct information unless one of the manufacturers happens to be a member on such forum. The best place to go to is the manufacturer first or and real top rated professional gunsmith with expertise in the particular firearm you are having problems with.

    Sorry to be so hard on some of you guys, but this thread was just so interesting and funny to read.
     

    clandestine

    AR-15 Savant
    Oct 13, 2008
    37,031
    Elkton, MD
    Those that say DEX ARMS was blowing smoke or that they never heard anything like they explained, or it's confusing....more then likely have never been in the industry to know what they are talking about. For most of us there are three headspace gauges: No Go, GO, Field. Well there are more especially for AR manufacturers. One is an assembly headspace gauge or manufacturers headspace gauge and is used during assembling the rifle. It could be considered a minimum Go gauges. DEX ARMS told you the truth. They are assembled a "little tight" and after a few rounds the parts wear in and are well within the GO limits. Colt also have a gauge that they use if the bolt on an AR 15 closes on a NO GO gauge and it use is to show if the rifle is safe and still serviceable.

    The internet forums are one of the worse places for correct information unless one of the manufacturers happens to be a member on such forum. The best place to go to is the manufacturer first or and real top rated professional gunsmith with expertise in the particular firearm you are having problems with.

    Sorry to be so hard on some of you guys, but this thread was just so interesting and funny to read.

    Colt does not use a NO GO for manufacturing, they use a 5.56 GO which is different than a .223 GO. There are 12 HS Gauges made for .223 and 5.56.

    His Barrel or Bolt caused short headspace and it's not an performance enhancement.

    Since you know so much about the AR, perhaps you can share a photo of your workspace and your credentials.

    I'll share mine:
    Professional Gunsmith for Scott's Gunsmithing 13 years
    Technical AR15' Instructor for School of the American Rifle 3 years.

    BTW, the tools, gauges, and jigs are completely AR specific.
     

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    GTOGUNNER

    IANAL, PATRIOT PICKET!!
    Patriot Picket
    Dec 16, 2010
    5,493
    Carroll County!
    SNIP.

    The best place to go to is the manufacturer first or and real top rated professional gunsmith with expertise in the particular firearm you are having problems with.....SNIP

    Chad, here is the part about you!
    Top rated professional gunsmith. Yup, that's you!

    Sent from my SM-G900V using Tapatalk
     

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