Smith & Wesson M&P .22 LR 12 Round Pistol Magazine Blued 1 Pack Steel 42251-12RD. Specifications for Smith & Wesson M&P .22 LR 12 Round Pistol Magazine: Manufacturer: Smith & Wesson Gun Make: Smith & Wesson Gun Model: Smith & Wesson M&P 22 Caliber: .22 Long Rifle Magazine Capacity: 12 Round Color: Blued Fabric/Material: Stainless Steel Package Contents: Smith & Wesson M&P .22 LR 12 Round Pistol Magazine What firearm models does the manufacturer say Smith & Wesson M&P .22 LR 12 Round Pistol Magazine is compatible with? The manufacturer says that Smith & Wesson M&P .22 LR 12 Round Pistol Magazine is compatible with Smith & Wesson M&P 22Smith & Wesson 42251-12RD: M&P .22 LR 12 Round Pistol Magazine Blued 1 Pack Steel