Build up and fortify your Glock® arsenal with the KCI® .40 S&W 15-Round Polymer Magazine for Glock 22/23/27/35 Pistols from GunMag Warehouse. This budget-friendly aftermarket magazine features a hardened steel insert that is encased in a high-tech polymer, engineered to prevent deformation, swelling, and cracking even when dropped from great heights just like standard factory Glock pattern magazines. The stainless steel spring and polymer follower ensure proper cartridge alignment and reliable feeding performance in high-stress target and defensive scenarios. Backed by KCI lifetime warranty. What are you waiting for? Grab a few spare KCI magazines for your .40 S&W Glock pistol today!