Fell apart on install, cheap - Presma 223/5.56 Aluminum Ejection Port Dust Cover Assembly

Was installing this and upon 2-3 operations the roll pin let go and the detect and spring shot across the room. I had to reinstall my old dust cover at a cost of my time and energy (which if you know require removing the hand guard and barrel) sheesh!! Was not impressed by re quality of the aluminum material or of the dust cover in general. Pretty poor offering