Poor quality - Luth-AR AR-15 A1 Stripped Upper Receiver w/ M4 Feed Ramp

I ordered the Luth-Ar A1 style stripped upper for a retro build and wow, is there any quality control? The carry handle dimmensions look way off when looking down the rear sight because one side is super thin and the other side looks fine. Im no A1 style expert but im pretty sure they botched the carry handle. My othe problem is the rattle and gap between the upper and any lower you put it on (I tried 3 different ones). And lastly, the finish is not retro grey but something else that feels like medium grit sandpaper.