Looks nice, machined wrong - Guntec USA AR-10 / LR-308 Gen 3 Ejection Port Dust Cover Assembly

Loop for the bar to go through is flat on the top side that it meets the dust cover, so it hits the receiver lip, creating tension and not allowing it to close.
It was really a waste of money and should be refunded, but got it to work decently by sanding the top of the hoop where they meet the plate. After 30 minutes or so sanding carefully, and loosing color on the side sanded, it could now close as it should and works as it should have to begin with and without having the color break just to make it work.
As was it was not worth more than $3 bucks, if you got a correctly machined one somehow, then surely worth what it's sold for.
Will see how i can get a claim or something given this.