The Rival Arms RA70G001A offers a notable utility by increasing the weight at the base of your Glock magazine. This function not only aids in quicker magazine changes but it also ensures a more balanced firearm due to the added felt weight. The Mag Baseplate is expertly CNC machined from aluminum and features a robust, hard anodized finish.Please be informed that this specific model is not compatible with Glock 36,42,42,48 models.