Mec-Gar 17 Round 9mm High Capacity Flush Fit Detachable Magazine, Nickel - MGSW5917N

Replacement magazine for Smith & Wesson 5900.Features:Increased 17 round capacity in a flush-fit design, features US Patent# 5,386,657 which provides two additional rounds without increasing magazine dimensionsCarbon steel tube, heat-treated for strengthHigher tensile music wire springPolymer followerRemovable steel butt-plate