Grendel Extractor same as 5.56? Or different?

[pinzgauer]

I've got an AA bolt where the extractor is shaving brass on one end. Same ammo shot in another grendel does not.

Is the extractor used for Grendel the same as 5.56? or different?

If it's the same I may try swapping it. I'm also going to pull the current & look for sharp edges, etc.

[bwaites]

Different! Needs a little cleaning up with a light dremel is all.

[glane5910]

If that doesn't work, you might try one from a 7.62x39