Originally Posted by
pth3k
If the buddy had to back the sight post all the way out ( LOWERING the POI ), It sounds like he already has a "F" front sight ( TOO SHORT ) & he needs an A2 front sight ( TALLER ) like the barrels SHOULD come with. That will cause the POI to drop
a bit......
If I was home I could measure my A2 upper FSB & my M4gery F marked FSB and give you the height above barrel of both. But I'm on duty tonight till 08:00 tomorrow so I cant.
Ty Hoeffer
Palmyra, VA
I believe you are mistaken. The F marked sight is actually taller. This thread has photos and specs for the two FSBs.
https://www.m4carbine.net/showthread.php?t=14753
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