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Posted: 6/24/2016 9:40:07 PM EDT
I purchased a BA 9mm barrel about a month ago for my build. Got my thread protector in the mail and noticed that the threads don't go all the way to the shoulder. This is as far on as the protector will go. I have contacted BA, but as it is the weekend probably won't hear back before the first of next week. I have no trouble shooting it as it is, but my concern is that I have a can in jail for it. Whatcha think?
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Posted: 6/24/2016 9:47:25 PM EDT
[#1]
Is the thread protector bottoming out on an internal shoulder? If it is, that's the issue. My BA 9mm barrel has a gap from shoulder to end of threads, but has no problem taking a KAK flash can, silencerco octane piston, or liberty mystic piston all the way to the barrel shoulder.
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Posted: 6/24/2016 9:56:25 PM EDT
[#2]
Quote HistoryQuoted:
Is the thread protector bottoming out on an internal shoulder? If it is, that's the issue. My BA 9mm barrel has a gap from shoulder to end of threads, but has no problem taking a KAK flash can, silencerco octane piston, or liberty mystic piston all the way to the barrel shoulder. No, there is no internal shoulder...just the threads don't go all the way and that is as far as the thread protector will go. It bottoms out on the last thread. Thanks for the info, I was about to worry that I had a messed up barrel. |
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Posted: 6/24/2016 11:06:22 PM EDT
[#3]
seems like you need the right length thread protector.
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Posted: 6/24/2016 11:33:27 PM EDT
[#4]
Quote HistoryQuoted:
seems like you need the right length thread protector. Would love to get one, but hard to find one that lists the length as .400" (IIRC). |
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Posted: 6/24/2016 11:34:56 PM EDT
[#5]
I have a BA 8in 9mm barrel and my KAK can threads all the way to the shoulder. Almost all barrels have a small relief cut section with no threads near the wall. It looks like your muzzle protector may not let the threads come thru the front. Will the protector thread on from the opposite end? That thread protector is really short. It should slightly extend past the threads when screwed all the way on.
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Posted: 6/25/2016 12:09:26 AM EDT
[#6]
yes I can screw it on both ways....I just ordered another thread protector (different brand). Will see if that is indeed the issue.
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Posted: 6/25/2016 12:38:09 AM EDT
[#7]
I have a BA 5.5 barrel and I am using a EGW thread protector from Midway USA and it threads all the way to the shoulder going on one way, but it will not thread all the way to the shoulder when put on the opposite way. If that makes sense.
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Posted: 6/25/2016 12:56:14 AM EDT
[#8]
This is normal for BA barrels. They do not relieve the threads as many barrel manufacturers also do. I found this out myself.
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Posted: 6/25/2016 9:08:51 AM EDT
[#9]
Thanks everyone...I went back and looked and the thread protector is from brownells and is a 9mm pistol protector. I think it is meant for Glock barrels. New one should be in the first of next week, will try it. If not, I will order the EGW and put the rest on the ee.
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Posted: 6/25/2016 2:05:45 PM EDT
[#10]
You take barrel to local machine shop and have fella and cut releif to back of threads using a parting cutter
Take longer to set up than the 15 -20 second to hit with cut off bit |
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Posted: 6/30/2016 9:03:25 PM EDT
[#11]
Got my new thread protector in today. Works like a charm, the old one was the issue.
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Posted: 7/1/2016 8:45:20 AM EDT
[#12]
Quote HistoryQuoted:
Got my new thread protector in today. Works like a charm, the old one was the issue. https://scontent-iad3-1.xx.fbcdn.net/v/t1.0-9/fr/cp0/e15/q65/13516513_10102578333925307_5304608016174610906_n.jpg?efg=eyJpIjoidCJ9&oh=e678b717e9c52d2a68a2e166c0724d3d&oe=57F9ACB8 I got the same one for my pistol. That one has a gap for barrels that don't have the threads cut all the way to the end. |
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