This is a CMMG 10-round magazine extension for FN Five SeveN pistols in 5.7x28mm
Crafted from durable polymer that’s designed to match the contour of your Five SeveN magazine, with a special corrosion-resistant chrome silicon spring, these CMMG magazine extensions are the ultimate upgrade for your Five SeveN pistol.
FN’s Five SeveN pistol is nothing short of revolutionary. Combining a supersonic, rifle-style cartridge with immense capacity and high-quality craftsmanship, it’s a favorite of military and top shooters from all over the world—and these CMMG magazine extensions allow you to send even more rounds downrange.
Grab a few 10-round mag extensions for your Five SeveN pistol today!