New 6.5G Build and Pierced Primers

[LRRPF52]

Hey guys, Im needing some assistance and hopefully I can find the right answers. I just built a 6.5G and I have a problem with it Flattening the primers and pierced Primers. I have a Aero Precision Lower with a Kynshot 5000 Hydraulic Buffer, BCA 16" upper with a seekins Adjustable gas block and a Odin Works Atlas 7 Compensator. At first I thought it was my ammo which isnt the best in the world, PPU Rifle Line 120gr, but then I switched to Hornady Black 123 gr and only 1 pierced primer out of 30 rounds but the primers were still flat. I plan on removing the 3 key changes and add 1 by 1, Buffer, Gas Block, and comp, to see if I can see a difference in the spent cases. When I first built the gun I never bothered to notice if I was having this issue as the thing had alot of recoil and decided to replace the above items. Any thoughts on where my issue may lie?[ATTACH=CONFIG]19906[/ATTACH][ATTACH=CONFIG]19907[/ATTACH]

You don’t say. I would return the upper for a refund and buy something else, personally.

I have zero expectations from those price points, including safety.

If one blew up in my face, I would only blame myself.

If you want to tinker, you can do their job for them and try to diagnose the problem, which could range from incorrect firing pin protrusion and bolt dimensions, to a tight bore.