This CCMG magazine extension kit includes a spring and magazine body extension for your FN FiveseveN, increasing capacity from 20 rounds to 30. Magazine body extension is durable polymer, and matches the contours of your existing magazine. Magazine spring is corrosion resistant steel, ensuring reliable function for years to come.
4 Ratings
THEY DON'T WORK!!!!
I'd suggest you not bother. I bought two and mated to two OEM mags pretty easily, no problems charging both to 30 rounds. However, I think you're supposed to be able to shoot with them, and as soon as we put them in a CMMG Mk57 pistol they caused feed jams. Both froze after the 1st round and we had to empty the remaining 29 rounds like it was a box of Ike & Mike's. I got home and changed both mags back before I even cleaned my weapons. Send me postage & I'll give you mine.
October 26, 2018
Easy to install works gre
Easy to install works great have had two of them installed for at least 3 years Shoot on the avg of once a month. If you all ready have an FN mag 20 round its a great way to get an inexpensive 30 round
December 21, 2016
Was very excited to make
Was very excited to make my FiveseveN magazines go from 20 to 30 rounds but sadly disappointed when the product arrived. I ordered 3 extensions. The spring is a little wider than the factory springs and therefore gets caught on a lip on the factory mag that the extension does not have. Doesn't push the rounds up properly.
April 18, 2016
Sorry to say, of the many
Sorry to say, of the many, many things I have purchased from CTD, this does not function well, but it is no fault of CTD. I bought the 10 rd. extension and the 30 rd. mag, and both have a tendency to cause jams when shooting the first 10 rounds. Seems like the spring just cannot handle the extra rounds. I shoot 200 rds. through this gun each week and can't remember the last time it jammed with the 20 rd. mags. Still might be fun for the range if you don't mind clearing jams.
August 31, 2012