Selling as a lot:
1 - Non USGI Black 30 Round Magazine (Non magnetic. Aluminum?)
1 - Non USGI Black 20 Round Magazine (Magnetic and heavier. Steel?)
1 - Non USGI Black 10 Round Magazine (Magnetic and even heavier. Steel?)
4 - New, never used Green USGI Followers
2 - Used Green USGI Followers
2 - Used Black USGI Followers
1 - Used Unmarked Floorplate
They only magazine I've used in this lot is the curved 20 Rounder. I had no problems with this magazine at the range when I last used it 2 years ago. The other two were recently acquired as part of a trade. I cannot speak to their reliability one way or the other. None of the magazines are marked in any way.
$25 shipped with a USPS Money Order or $30 Shipped if you must use Paypal/Satan.
ETA: Thanks to TheRealKiller for alerting me that one of the 20 rounders was actually a 10.
It was sold to me as part of an M261 kit with a M261 mag adapter installed. Most 10 rounders don't accept M261 mag inserts, thus the confusion.