Smith & Wesson M&P .40 S&W/.357 SIG 15 Round Pistol Magazine Blued 1 Pack Steel 19439-15RD. Specifications for Smith & Wesson M&P .40 S&W/.357 SIG 15 Round Pistol Magazine: Manufacturer: Smith & Wesson Gun Make: Smith & Wesson Gun Model: Smith & Wesson M&P 40 Caliber: .40 S&W Magazine Capacity: 15 Round Color: Blued Fabric/Material: Stainless Steel Number of Rounds: 15 Package Contents: Smith & Wesson M&P .40 S&W/.357 SIG 15 Round Pistol Magazine What firearm models does the manufacturer say Smith & Wesson M&P .40 S&W/.357 SIG 15 Round Pistol Magazine is compatible with? The manufacturer suggests that Smith & Wesson M&P .40 S&W/.357 SIG 15 Round Pistol Magazine is compatible with Smith & Wesson M&P 40Smith & Wesson 19439-15RD: M&P .40 S&W/.357 SIG 15 Round Pistol Magazine Blued 1 Pack Steel