Dont skimp on quality - American Tactical Imports AR-15 Stripped Poly Hybrid Upper Receiver

Purchased one on a whim to try and save a cost and boy was I in for a wild ride. First off this product feels like garbage. Second the drilled out holes for the take down pins of the AR platform aren't aligned properly and require tons of filing. (Im going on about 30 minutes each fixture, shouldve taken before and after photos but c'est la vie... also going slow so as to do my best keeping them functional and not destroyed) The "reinforced" sections have metal for places that experience high pressure, is chincy. Truly feels like this won't withstand much at all. I am a little hesitant to run more than a feel rounds at a time through it at this point. Without peace of mind, with the time spent amending this piece to actually fit, what I gained in saving I lost in time and worry.... also money seeing as how I have ordered a replacement upper.