ATI Schmeisser S50 MLE Glock Magazine Adapter for Glock 9mm Luger 17/19 50/rd

Constructed from impact-resistant polymer and featuring side-facing witness windows, this kit remains lightweight and allows you constant visibility of your remaining rounds. It installs quickly and easily with the included disassembly tool, and is reversible anytime you'd like to go back to your standard magazine! The overall capacity for Glock 17 magazines increases to 50 rounds, while the overall capacity for Glock 19 magazines increases to 48 rounds!