The ETS GLK-22-170 GLK22170 magazines are constructed with advanced polymers, offering exceptional impact resilience. As such, they won\'t crack or break, even when dropped. These magazines can withstand the rigors of extreme heat, cold, and UV exposure without becoming brittle. This resilience extends to harsh environments, chemicals, and severe cold. The solid construction ensures that long term storage, even when fully loaded, won\'t cause the feed lips and body to spread due to creep.Crafted specifically for Glock pistols, ETS magazines feature a translucent body, enabling visual tracking of your ammo count. This model boasts a 24-round 40 S&W capacity and is designed to fit Glock models 22/23/27 (Gen 1-4). It measures in at 170mm, making it competition legal.