The HKS GL942 is a magazine loader for 9mm Luger firearms, specifically compatible with Glock 17 and Glock 22 models. This loader allows the user to add 2 rounds to the magazine capacity, enhancing the shooting experience. Key Features Added Capacity: Increases the magazine capacity of Glock 17 and 22 by 2 rounds. Compatibility: Specifically designed for use with Glock models G17 and G22. Material: Constructed from durable black plastic for long-lasting use.