Compatible with Smith & Wesson® SD9® centerfire pistols, the Smith &. Wesson SD9 9mm 16-Round Magazine is a genuine factory magazine, featuring a flush-fit design for comfortable, snag-free carry. This magazine offers a full standard capacity of 16 rounds inside a stainless steel body with clear-cut witness holes and heat-treated internal spring wire, promising consistent field service and smooth operation you can depend on. Drawing inspiration from the Glock series of polymer, striker-fired pistols, and the classic ergonomics of the 1911, Smith & Wesson’s SD series of pistols is a lightweight alternative that’s ideal for beginners and home defense uses.