CMMG Black Magazine Extension for FN Five-seveN 5.7x28mm

Enhance your FN Five-seveN pistol's performance with this sleek black magazine extension designed specifically for the 5.7x28mm caliber. Boost your magazine capacity by 10 rounds without altering the original factory setup. This extension features a durable chrome silicon spring, ensuring resistance to salt water and preventing set, making it a reliable choice for both tactical and recreational shooting. Upgrade your firearm with ease and confidence, knowing this extension maintains the integrity and precision of your FN Five-seveN.