FN 57 Magazine 10rd Extension Kit For Your FN Five Seven Pistol - Made By CMMG

We have FN 57 Magazine Extension 10rd For Sale! This is a high-quality mag extension kit made by CMMG. You simply remove floor plate, install extension, insert spring and put the floor plate back. Installation takes only seconds and does not permanently alter factory magazine. Chrome silicon spring is salt water resistant and will not take a set. This is a great FN57 Accessory for your FN 5.7x28 Pistol.