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Posted: 1/4/2006 7:48:09 PM EDT
I would to know if the R0977 upper is the same as the LE6921upper?
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Posted: 1/4/2006 8:17:01 PM EDT
[#1]
By no means am I a COLT expert but do know that both are the same...
Flat top with 14.5" chrome lined 1/7 twist barrel... |
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Posted: 1/5/2006 3:49:08 AM EDT
[#2]
I agree with shootersden, and would add that the only difference may be the bolt carrier and I emphasize may. But the bolt and carrier are not necessarily parts considered when referencing complete upper recievers. One other thought. The RO977 may have a heavier barrel under the handguards. LE/.mil types may offer insight here. Paging: Ekie, Tweak, Mr Ryan........................ 
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Posted: 1/5/2006 5:16:02 AM EDT
[#3]
Your right come to think about it... I do believe the R0977 has the SOCOM type medium weight barrel... The LE6921 has the government profile, lighter under the hand guard barrel... |
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Posted: 1/5/2006 9:05:29 AM EDT
[#4]
It depends
The LE6921, RO920, RO921, RO979, and RO977 will have the same upper. The safe-semi-full variants of the above could have the midweight barrel after 2001 while the others have the regular M4 barrel. |
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Posted: 1/5/2006 6:25:21 PM EDT
[#5]
I have a dumb question . How does the medium barrel help the M4A1 , M4 R0977 ? Wouldn't it hold in more heat?
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Posted: 1/5/2006 8:34:05 PM EDT
[#6]
Beefier barrel for sustained full auto use. |
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Posted: 1/31/2006 9:07:56 PM EDT
[#7]
Any new information?
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