Mec-Gar USA Pistol Magazine, 9MM, 10 Rounds, Fits S&W 5900 Series Pistols, Steel, Blued Finish MGSW5910B If you are looking for a magazine for your Smith and Wesson Model 5900 Series Pistol" choose the magazine manufacturer that is the most trusted in the industry. All Mec-Gar magazines are made in Italy with the most sophisticated technologies and best materials. Since 1965 Mec-Gar has been a world leader in the production of magazines for the largest firearm manufacturers and militaries in the world. Fits S&W 5900 Series" 910" 915" 659 pistols in 9mm.