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Posted: 9/15/2007 6:01:57 PM EDT
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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 ![]()
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