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Posted: 9/18/2004 4:48:33 AM EDT
[#1]
chrome bore I think but dont quote me on that
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Posted: 9/18/2004 7:05:50 AM EDT
[#2]
CB does indeed stand for chrome bore. I emailed LMT a couple months ago about the MP testing and I received a reply stating that LMT does MP test each barrel.
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Posted: 9/18/2004 12:33:13 PM EDT
[#3]
Hey, thanks guys.
I appreciate it! |
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Posted: 9/23/2004 6:22:22 PM EDT
[#4]
Does LMT make 1/9 twist barrels? I have one that is supposed to be an LMT barrel however it is marked:
"5.56 NATO 1/9" Did I get some no-name barrel thinking it's an LMT!? |
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Posted: 9/23/2004 6:31:46 PM EDT
[#5]
I don't think LMT makes 1:9 barrels. I believe DPMS uses markings similar to yours, but I'm no expert here. Is it chrome-lined? |
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Posted: 9/23/2004 7:18:09 PM EDT
[#6]
Yep, it's chrome lined and has a "7" stamped into the barrel extension...Are there any numbers on LMT barrels that differentiate them from others? There are some numbers on the FSB:
"1AI2" and then a tiny "L". I know I definitely have an LMT upper receiver since it has the LMT mark on it but I'm wondering about the barrel now... 
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Posted: 9/23/2004 7:32:11 PM EDT
[#7]
Very interesting. I wonder what the "7" means. On a Colt gun, a "4" on the extension means M4 extension. Perhaps LMT does make 1:9 twist barrels, but the marking doesn't correspond to the markings they put on their 1:7 barrels. Did you buy the upper from an individual? |
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Posted: 9/23/2004 7:43:15 PM EDT
[#8]
I purchased it from a company several months ago and put it into storage shortly after receiving it (in the midst of a relocation). I am just now breaking it out for assembly and realize maybe I should have looked it over more than I did...Maybe it's an early production LMT?
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Posted: 9/23/2004 7:48:18 PM EDT
[#9]
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Posted: 9/23/2004 8:01:15 PM EDT
[#10]
Mail away, thanks for the suggestion.
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Posted: 9/24/2004 9:11:34 PM EDT
[#11]
Got a reply from LMT this morning - thumbs up to LMT's customer service!
Evidently, according to the markings, I do have an LMT barrel. What I thought was a "7" stamped into the barrel extension is actually an "L". So, LMT does make 1/9 barrels... |
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Posted: 9/30/2004 12:28:51 PM EDT
[#12]
Here's a little update.
Take this with a grain of salt, as it's all hearsay from me. According to LMT (have to take their word for it), they proof load test and magnetic particle inspect the following: 1) barrels 2) bolts -Jim |
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Posted: 9/30/2004 12:44:18 PM EDT
[#13]
LMT has made some runs of 16" 1/9 M4 uppers. No chrome.
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