Can a magazine cause failures to *eject*?

[MistWolf]

That type of malfunction is caused by weak extraction. Replace the extractor spring with a Colt extractor spring.

A Colt extractor spring was installed in my suppressed shorty AR and the gas flow tuned with an adjustable gas block. It put the empties in a two foot wide, four foot long pile.

To answer your question, the failure shown in your photo is not caused by the magazine

[nightchief]

In reference to thread I posted in which I was having extraction issues with a BCM bolt, I initially ran it with the supplied spring but without the supplied O ring. I had several extraction failures that looked like the OP's extraction failure. I changed the spring to a Sprinco extra power spring and it seems to have fixed the issue.

NC

[Circle_10]

I'm seeing a definite consensus here on the extractor/extractor spring being the issue so that's where I'll start.