AGENCY MAG EXT G17 17RD +5 BLKThe Agency Arms Magazine Extension for Glock 17 in black adds 5 rounds to your standard 17 round magazine, boosting your total capacity to 22 rounds. This extension is precision machined from high grade aluminum with a sleek black finish that complements your Glock's aesthetics. It includes a high quality spring to ensure reliable feeding and function with the increased capacity. The extension's design maintains a low profile while providing an