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[ARCHIVED THREAD] - front sight base question

Posted: 12/23/2003 8:58:44 AM EDT

is the front sight base on a flattop upper a differant hight than the one on a standard upper? thanks

Posted: 12/23/2003 10:08:58 AM EDT

[#1]

On Colt M4s yes. BM uses the std. frnt. st. base and a higher post. The added st. radius on 20"s allow the old frnt. st. base to be used.

[ARCHIVED THREAD] - front sight base question

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