This FiveSeven 10rd mag extension is the ultimate upgrade to your 5.7x28 pistol. Installation takes only seconds and does not permanently alter factory magazine. Chrome silicon spring is salt water-resistant and will not take a set.
|Model Fit||FN Five-seveN|
This product may be restricted for sale in California, Hawaii, Maryland, New Jersey, and New York. Please contact your FFL or call us at 800-217-2998 before purchasing to verify product restrictions.