Girsan MC312 double feed?

[u/Warm-Alternative-433]

Hey, I was wondering if anyone can provide some help with an issue I’m having with my Girsan MC312. See pics for reference but it seems to be double feeding rounds onto the lifter and causes a jam. Does anyone have any recommendations how to fix? Thanks.

[u/Specialist_Chard5231]

Can you post a picture of the loading port? Some shotguns have a ring at the reciever end of the magazine tube that helps hold the shells in. Yours looks like there is a bunch of wear in that spot.

Also try cleaning the trigger group.