Well....I see you posted it up in the classifieds which I now believe was your intent from the start.
You were not completely honest in your ad which I am absolutely sure most of us already know.
HHhhhhmmmmmmmmmmmm
With the slide/barrel in battery with recoil spring pressure on them and they still rattle......that is loose.
It did have some movement (minimal) front to back while in battery but the side to side movement is where I think it was making the noise I heard.
I am going to take him a new recoil spring when I see him at Christmas and see if that will help the front to back movement, he has about 700 rounds through it so I doubt the spring is worn though.
I am sure you know how to check lock up. That will let it rattle a bit as well.
I had a Para that did this and required the .002 over pin to get it into lock up.
Only if it is a bannable offense.
New guys get a break. To a point.
Or just come out to the range with us and run some of them........
Kinda like a fat chick , don't think I should be seen actually holding one .
... we won't be seeing him anymore.