Is the original follower catching the spring completely on the underside? There's nothing that can just up and break besides the spring, follower and their relationship. Look for a clean mag box, and fully seated spring. Beyond that.....is the spring going flat?
Thank you. I've given all of those suggestions a good look see and they are all (or appear to be) in normal operating condition. I've tried a new spring, and even tried compressing, and then stretching the existing spring and none of that has any affect on the double feeding. Also, the mag box is not trapped or crooked and is seated as it's supposed to be (but just a tad lose as it should be). So in other words the usual suspects don't appear to be causing this one�
I'm at a loss�
