Crafted from clear polymer with ergonomic baseplates and steel internal springs, the ETS® Smith & Wesson® M&P Shield® 9mm 12-Round Extended Magazine is a performance-enhanced aftermarket pistol magazine, built to endure any kind of punishment and deliver serious reliability in even the most extreme conditions. The polymer follower and stainless steel spring ensure smooth, reliable feeding and proper cartridge alignment in high-stress target and defensive applications. Building on decades of experience and proven performance, Smith & Wesson’s Military & Police pistols combine superior ergonomics with rock-solid reliability to deliver a pistol that’s trusted by law enforcement and top shooters all over the country. Double down on firepower with a few 12-round magazines for your M&P pistol today! Made in USA.