The CMMG 57AFD1E Extension 5.7x28mm 10 Round Mag Extension for FN Five-seveN is an exceptional accessory designed to enhance the performance and capacity of your FN Five-seveN 20 round magazine. Crafted by CMMG, a reputable name in firearm accessories, this black mag extension seamlessly integrates with FN Gen1 magazines, allowing shooters to enjoy an extended shooting experience with minimal reloads. Engineered specifically for the 5.7x28mm caliber, this 10 round extension not only boosts magazine capacity but also maintains the reliability and quality that CMMG is known for. The robust design ensures durability, making it suitable for both tactical applications and recreational shooting. Its sleek black finish adds a touch of sophistication while enhancing the extension's resilience against the rigors of regular use. Whether you're upgrading your existing setup or seeking reliable magazine parts, the CMMG 57AFD1E mag extension combines functionality with a streamlined design, meeting the demands of modern shooters and enhancing your overall shooting experience.