WE Scar Magazine issue

[djKail]

Hey everyone, I spent a solid 7 hours or so playing yesterday with my WE Scar L. towards the end of the day I started notices an issue with double feeding. The magazine would feed two rounds, the second would just sort of fall out of the barrel.

I took it back to base camp, cleaned the re-lubed the bolt and this fixed it except for one magazine. I tested all 5 magazines and only one caused this issue. Is this magazine related? If so...what can be wrong with the magazine to cause this?

Thanks!