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9/15/2007 6:01:57 PM EDT
On my 20" colt upper with a 1/9 twist has something strange on the front sight. My RRA A4 Elite has a small F on the front sight so I figured that at very least my colt had an F front sight. When I looked on my Colt there is an S followed by a circle with what looks like a R in the circle and then followed by a 5. Question: do I have a correct height front sight.

Thanks,
D

9/15/2007 6:03:45 PM EDT
[#1]
Do you have a fixed or removable carry handle?
9/15/2007 6:08:03 PM EDT
[#2]
Removable carry handle. The upper is a flat top. The upper was bought by it self as an upper only if that makes any difference. Thanks for the help.

D
9/15/2007 9:26:00 PM EDT
[#3]

Quoted:
When I looked on my Colt there is an S followed by a circle with what looks like a R in the circle and then followed by a 5.




Look on the other side and tell us what you see.
9/16/2007 8:34:43 AM EDT
[#4]
The only thing on the other side is a little tiny hole, no marks of any kind. Weird
9/16/2007 8:44:26 AM EDT
[#5]


This was previously posted by a member about "F" FSB and standard FSB height dimension.
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