No qc with this company - Guntec USA AR-15 Charging Handle w/ Gen 5 Latch

Ordered this recently and tried to put it in but wouldn’t fit correctly. Could tell everything was the right size but didn’t notice the pin holding the latch in want put in all the way. So I tried to use a punch to pop it in correctly but by this time I had been fighting with it too much trying to get it in the gun so it was to the side. So then the next step was to try to file the part sticking out. Still will not fit properly in the gun and if it did I’d still have to recoat it. I also need to fix where this has scratched a section of the finish off of my upper. Definitely won’t be buying anything with Guntec’s name on it again.