Buy any new Springfield XDs before August 31st, 2015 and they will send you 3 mags and a dual mag holder free. I mailed my form in on July 21st and received them today. It only took 14 days. They come in a small plastic gun case to boot. I got a 9 rd (with the Xtension sleeves, one for each backstrap size) an 8 Rd w/ sleeves and a 7 rd flush mount. Great deal.
Springfield Armory® XDS-Summer
Springfield Armory® XDS-Summer