i bought one of your 20 inch flat top barreled uppers. I had to run the front sight post up way past what is normal with my other 5 ARs. in order to zero at 25 yards.
Sent it back for evaluation and got it back with a longer front sight post installed.
My question is: why is their not a F marked FSB on this assembly?
Posted: 4/14/2015 1:14:01 PM EDT
[#1]
F sights were designed for the shorter sight radius, not the long. We rarely have any elevation issues on our 20" barrels, and when we do, the long sight post resolves them.