I'm running a Group buy on lowers and I was looking through the site and just found this
http://www.dsarms.com/30-Rnd-AR15-MagPul-Polymer-PMAG556mm_223-----MPMAG211/productinfo/MPMAG211/
http://www.dsarms.com/30-Rnd-AR15-MagPul-Polymer-PMAG556mm_223-----MPMAG211/productinfo/MPMAG211/