Looking to get some new mags for SR - anyone seen any good deals lately?

I've seen tons of decent/good deals on 30 rounders, not so much on 20s.  If anyone can point me in the right direction, I'd appreciate it.

TIA.

http://www.44mag.com/product/magpul_pmag_20/223_ar15_magazines

In stock when I copied this. But they had none of the metal 20 rounders.

Also:

http://www.brownells.com/magazines/rifle-magazines/magazines/ar-15-m16-20-30-round-magazines-prod21225.aspx

Look down the list till you see 20 rnd.

Thanks for those links.

Did they ever do away with that random rule banning 20 round magazines that were curved?  I assume that was done in response to those silly looking metal 20's that came out a few years ago, that were just shortened 30's.  But as long as that rule is in place, you can't use the new Gen 3 curved PMag 20's, nor the Lancer 20's - because they have a slight curve.  I bring this up, because your first link is to curved PMag 20's.