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Posted: 1/26/2014 5:56:06 AM EDT
[#1]
Have you checked gas tube and gas key alignment?
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Posted: 1/26/2014 6:00:53 AM EDT
[#2]
Are all the parts brand new? Yeah I would check the gas tube alignment with the gas key on the bolt carrier. Swap out your bolt carrier assemblies and see if they work better in the other uppers.
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Posted: 1/26/2014 6:01:03 AM EDT
[#3]
Remove the BCG. Take the cam pin and bolt out. Using only the carrier, push into upper and see if it will go all the way forward. If not then more than likely your carrier is binding on the gas tube. If that is the case make sure that the gas tube is properly installed in the gas block.
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Posted: 1/26/2014 6:08:43 AM EDT
[#4]
Quote HistoryQuoted:
Have you checked gas tube and gas key alignment? Yes, I have tried 4 different BCGs , I have swapped out the upper receiver and the lower receiver. I have installed to 2 other barrels on this upper and they both go into battery fine, I have installed this barrel on the other upper assembly's and it will not go into battery. With the barrel removed from the upper and the bolt removed from the carrier, and extractor and ejector removed from the bolt it will not go in to battery. |
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Posted: 1/26/2014 6:12:15 AM EDT
[#5]
When checking headspace, did you remove the ejector and extractor? What is the measurement on the Go gauge? The mil spec for minimum headspace is 1.4646" and the SAAMI .223 REM spec for minimum headspace is 1.4636". Also, did you verify with a caliper that the headspace gauge does indeed measure what is listed on the gauge by measuring from the breech face side of the gauge to the 0.330 datum line. To find the 0.330 datum line, it is at the first shoulder of the cartridge going towards the muzzle.
SAAMI .223 REM Specification |
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Posted: 1/26/2014 6:15:11 AM EDT
[#6]
Remove the gas tube and see what happens.
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Posted: 1/26/2014 6:16:56 AM EDT
[#7]
Quote HistoryQuoted:
When checking headspace, did you remove the ejector and extractor? What is the measurement on the Go gauge? The mil spec for minimum headspace is 1.4646" and the SAAMI .223 REM spec for minimum headspace is 1.4636". Also, did you verify with a caliper that the headspace gauge does indeed measure what is listed on the gauge by measuring from the breech face side of the gauge to the 0.330 datum line. To find the 0.330 datum line, it is at the first shoulder of the cartridge going towards the muzzle. SAAMI .223 REM Specification Yes ejector and extractor removed. No did not check measurements on go gauge, will do that this afternoon. |
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Posted: 1/26/2014 6:17:09 AM EDT
[#8]
Did You Clean Barrel And Chamber Good With Chamber Brush?
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Posted: 1/26/2014 6:17:47 AM EDT
[#9]
Quote HistoryQuoted:
Remove the gas tube and see what happens. Barrel is removed from upper , bolt is removed from carrier . |
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Posted: 1/26/2014 6:20:14 AM EDT
[#10]
Quote HistoryQuoted:
Did You Clean Barrel And Chamber Good With Chamber Brush? Yes, many times now, I even went as far as buying new chamber brushes thinking maybe they would scrub harder. |
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Posted: 1/26/2014 6:27:22 AM EDT
[#11]
Out of curiosity, what is the brand of barrel?
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Posted: 1/26/2014 6:33:49 AM EDT
[#12]
Quote HistoryQuoted:
Out of curiosity, what is the brand of barrel? I was hopping to not have to mention names, since I haven't contacted them ., and I am certain they will take care of me if this does turn out to be an issue with the barrel and not some bone head move on my part. |
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Posted: 1/26/2014 6:40:43 AM EDT
[#13]
Quote HistoryQuoted:
I was hopping to not have to mention names, since I haven't contacted them ., and I am certain they will take care of me if this does turn out to be an issue with the barrel and not some bone head move on my part. Quote HistoryQuoted:
Quoted:
Out of curiosity, what is the brand of barrel? I was hopping to not have to mention names, since I haven't contacted them ., and I am certain they will take care of me if this does turn out to be an issue with the barrel and not some bone head move on my part. Let me throw this name out there..ICE Arms. If it's them..go ahead and throw them to the wolves..they have had many issues with their barrels. I had this exact issue with one of their barrels..2 months later,. I am still waiting on a refund. If it is another manufacturer..I would try to see if they will take care of it before posting the name. Was only curious if it was the same company that I had issue with. |
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Posted: 1/26/2014 6:48:17 AM EDT
[#14]
Quote HistoryQuoted:
Let me throw this name out there..ICE Arms. If it's them..go ahead and throw them to the wolves..they have had many issues with their barrels. I had this exact issue with one of their barrels..2 months later,. I am still waiting on a refund. If it is another manufacturer..I would try to see if they will take care of it before posting the name. Was only curious if it was the same company that I had issue with. Quote HistoryQuoted:
Quoted:
Quoted:
Out of curiosity, what is the brand of barrel? I was hopping to not have to mention names, since I haven't contacted them ., and I am certain they will take care of me if this does turn out to be an issue with the barrel and not some bone head move on my part. Let me throw this name out there..ICE Arms. If it's them..go ahead and throw them to the wolves..they have had many issues with their barrels. I had this exact issue with one of their barrels..2 months later,. I am still waiting on a refund. If it is another manufacturer..I would try to see if they will take care of it before posting the name. Was only curious if it was the same company that I had issue with. No, not ICE , manufacturer and vendor both have good reputations ,I am certain they will take care of me and I will replace with the same barrel with out a doubt. |
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Posted: 1/26/2014 6:49:07 AM EDT
[#15]
If you take ONLY the bolt and place it in position in the chamber will it go forward and turn/lock in place ????
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Posted: 1/26/2014 6:56:05 AM EDT
[#16]
Quote HistoryQuoted:
If you take ONLY the bolt and place it in position in the chamber will it go forward and turn/lock in place ???? Yes, and every thing looks and feels smooth to my inexperienced eyes. |
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Posted: 1/26/2014 7:08:14 AM EDT
[#17]
Sounds like it's time to call up the barrel manufacturer if multiple bolts cause it to fail the GO. I hope all the people who don't check headspace read this, if you were out of spec. the other way around it could have been really bad... I see that poll going around where more than 70% of people don't bother to check and it makes me sad.
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Posted: 1/26/2014 7:20:32 AM EDT
[#18]
Quote HistoryQuoted:
Sounds like it's time to call up the barrel manufacturer if multiple bolts cause it to fail the GO. I hope all the people who don't check headspace read this, if you were out of spec. the other way around it could have been really bad... I see that poll going around where more than 70% of people don't bother to check and it makes me sad. That poll is what prompted me to post, If no one else ever has problems then the odds of me doing something wrong is pretty high. |
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Posted: 1/26/2014 7:21:10 AM EDT
[#19]
deleted
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Posted: 1/26/2014 7:27:36 AM EDT
[#20]
Quote HistoryQuoted:
+1 u might not have the gas tube roll pin actually in the gas tube hole. the inside of the key is hitting your "extended" gas tube Quote HistoryQuoted:
Quoted:
Remove the gas tube and see what happens. +1 u might not have the gas tube roll pin actually in the gas tube hole. the inside of the key is hitting your "extended" gas tube With the barrel removed from upper, gas tube removed from barrel , bolt removed from carrier, extractor and ejector removed from bolt, will not go into battery with go gauge or any of the the ammo I have. |
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Posted: 1/26/2014 7:50:30 AM EDT
[#21]
Fecal matter occurs.
Specs or no specs some stuff just gets made wrong. Some specs are wrong. Some parts get to the opposite ends of the allowable variance and don't work with each other. We had many mil drawings the had not been adequately checked for tolerance stackup. Ever try to convince a government worker something the government did was wrong? Yeah, lots of fun. And yes check headspace. As stated, yours was an obvious problem and prevents locking up and firing. The opposite can be a very unpleasant experience. The manual for the military has very specific steps to check headspace. If it were not important why is it in the manual? |
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Posted: 1/26/2014 8:01:57 AM EDT
[#22]
It's the barrel extension
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Posted: 1/26/2014 8:02:57 AM EDT
[#23]
sounds like some of the pre-made parts and assembled by you are out of spec
since you did not make the individual parts, there is no build here as advised swap out the pre-assembled parts out |
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Posted: 1/26/2014 8:09:37 AM EDT
[#24]
Quote HistoryQuoted:
sounds like some of the pre-made parts and assembled by you are out of spec since you did not make the individual parts, there is no build here as advised swap out the pre-assembled parts out Thanks for the help, I will go back and try again using the word assemble rather than build, I can see how that could be causing the problem. Is there a "Assemble it yourself" sub forum I can post this problem in? |
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Posted: 1/27/2014 10:18:57 AM EDT
[#25]
Quote HistoryQuoted:
sounds like some of the pre-made parts and assembled by you are out of spec since you did not make the individual parts, there is no build here as advised swap out the pre-assembled parts out 
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Posted: 1/27/2014 10:23:43 AM EDT
[#26]
Same problem with multiple BCGs. = Problem is not the BCG.
Other barrels work with this BCG and receiver = Problem is not the BCG or the receiver Placing barrel in other uppers with different BCG gives same problem = problem is with the barrel assembly. You are already eliminated the only other variables. Congratulations. You won one a very few headspace prizes. |
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