06-05-2020, 01:58 AM
First thanks to everyone that responded. Everyone was on the money and pointed out a hole in the little bit of knowledge I did have on AR assemblies. I've added a step to check alignment before taking a rifle to the range.
As for the rifle build. It was an Aero Upper with a Seekins SP3RV3 handguard. With it being a standard upper you do have to time the 2 nut assembly to get the holes for the gas tube to line up. I guess I got lucky on the 556 I used on my first build using this type handguard. I decided that when I took the rifle apart I would switch the upper to a BCM blem. Had to thermo fit but I think I'll just make those uppers my standard now. I got the rifle back together and ran to the range just for function testing. I used 3 ten round elanders with 90, 107, and 123 gr factory ammo. 60 rounds with no malfunctions of any type. Ejection was at 3:30-4:30.
As for the rifle build. It was an Aero Upper with a Seekins SP3RV3 handguard. With it being a standard upper you do have to time the 2 nut assembly to get the holes for the gas tube to line up. I guess I got lucky on the 556 I used on my first build using this type handguard. I decided that when I took the rifle apart I would switch the upper to a BCM blem. Had to thermo fit but I think I'll just make those uppers my standard now. I got the rifle back together and ran to the range just for function testing. I used 3 ten round elanders with 90, 107, and 123 gr factory ammo. 60 rounds with no malfunctions of any type. Ejection was at 3:30-4:30.