我的前瞄是F marked。
这个提把有人回答了这个问题。
Is it compatible to F mark front sight? A: The front sight post on a standard Colt front sight base will bottom-out in the sight well at approximately 24 clicks below flush. On an "F" marked front sight base the sight "shelf" is a only 0.040" higher than on a standard front sight base. That means you might have to turn your front sight post down approximately 6 clicks further with an "F" marked front sight base than on a standard front sight base. So unless your front sight post is set at 18 clicks below flush with a standard front sight base, using an "F" marked front sight base with this should be a non-issue. see less
Greg Davis answered on June 13, 2015
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