got my joe p mbc from forced performance, but i have a question

[x628x]

is there supposed to be something like rattling in it? i shook it (dont know why) and it sounds like somethings loose, im guessing the spring. its not supposed to be loose is it? has this happened to anyone? i guess i should call them and see if i can take it back (their only about 20 miles from me) and get another one.
or is it supposed to 'rattle?'

 

[airbrat]

nope, you shouldn't hear anything rattling. Everything pretty much inside is under tension. I also have a JP.

 

[x628x]

so i guess ill be calling them when i get up tomorrow... or today. thanks.