Tark:Both mags, the 13 and the 10 rd., are genuine Bersa. I'm pretty computer illiterate, so I don't have a clue how to post a picture. I'll see if my wife can help me.
Here the procedure for posting a picture. So easy even a caveman could do it . . .
http://bersatalk.com/forums/thread/54101.aspx
Can't help with the rattling, but you could search the Thunder 9 or other forums, I think this was discussed within the last few months.
Bersa Thunder .380 DT
Ruger Speed Six .357
Saiga 7.62x39 Carbine
Ruger 10/22
"Barnum was wrong - it's more like every 30 seconds."