So I got these Ace1Arms glock mags and one of them came without the gas route installed. I finally got around to doing maintenance but could not get a roll pin out. Right side is a standard pin, left side is a roll pin. I could not get it to move using a roll pin punch and a hammer with moderate force. There's a faux valve looking thing up top above the release valve, loosening this does not have any effect. Anyone else have these mags? Is there something I'm missing?