Um, the CMP may not be taking orders for M2, I've heard they're almost out of it and are concentrating on filling existing orders (like
MINE! 
)
I bought 100 M1 enbloc clips from Fred's M14 Stocks. He offers "lightly rusted" original GI clips for a great price, but he's pretty slow at shipping. I did eventually get them, now I just need to de-rust them. They're not damaged, just light surface rust is all. He also has cleaner ones for a little higher price.
Fred's Riflemans Accessories Rusty are 10 for $4, clean are 10 for $7.50, $25 minimum purchase.