QUOTE (kennedyusmc @ October 24th 2009 11:56 AM)

2) Form. They don't have the "double lip" that the extension create.
What do you mean?
They look like 20rd mags with extensions to me . If you're talking about the internal spot where the mag meets extension I think they'll be about the same.
This post has been edited by VTD: October 24th 2009 9:16 PM