Something sliding back and forth in the buffer tube?

[SteveL]

Hi Steve
No, I haven't removed the buffer tube yet. If I found out that the sound was normal I was just going to leave it be. If not normal, I wanted to wait until I got the fixture block. Kind of want to preserve the "like new" condition of the rifle. (I'm little anal when it comes to stuff like that)....lol! What I'm hearing, sounds bigger than just debris though.

Thanks, crispy

I didn't mean to remove the entire receiver extension (buffer tube). I just meant to remove the buffer itself as Johnson described.