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Posted: 5/26/2003 8:58:34 AM EDT
my dad has a colt post ban 16" whith a flattop upper that has the m4 above gas tube. whats up with that? i had a colt 6920 m4 upper that wasent marked with the m4,
Link Posted: 5/26/2003 2:45:23 PM EDT
All the Colt 6920's should be marked M4 above the gas tube. Some of the M4 stampings are so light you can barely see the markings.
Link Posted: 5/26/2003 3:01:14 PM EDT
this is not a 6920 upper. it is a post ban rifle he bought with a hbar barrel
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