Just got mine back from DPMS for the same problem (month turn around, not bad). The gunsmith swapped out the Old style A3 upper (high) for their newer low profile A3 and installed an extended front sight post. It does shoot point of aim/impact at 25 yds without having to hold extremely low. Now the front sight post extends higher than the front sight bases protective ears, which I fear could bend. Also, after looking at the new A3 upper, I noticed that its between the listed spec size (top of charging handle opening to the top of the receiver) of the older LR308 AP4 upper and the new low profile Upper. So its anyones guess who makes a rail system that will mate up, but I can't complain ;D