Thread: Longbranch No4 mag problem

@apkiwi , if nothing is wrong with the spring and the rounds are firmly held at the top of the mag and not rim locked (top round's rim sitting behind the rim of the next round down so that the bolt is trying to push two forwards together) then the issue is unlikely to be the mag. As you suggest the mag isn't locking in high enough, I would be looking at the mag catch assembly and sear arrangement. Is the mag catch free to move and not seized, the sear tension spring present and not broken, and nothing crudding up the works???

You will likely need to pop the foreend off to check these bits out, but that'll get you in for a good look at the inside where the mag sits anyway.