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Posted: 3/11/2007 10:00:54 PM EDT
| What is the difference between a standard and M4 barrel extension? While researching parts I have seen some uppers listed as "Machined for use with barrels that feature an M4 barrel extension". |
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Found the answer here: www.m4carbine.net/showthread.php?t=193 Really good explanation of of the difference. |
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