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CMMG FN Five-seveN 10rd Magazine Extension Kit
$14.30CMMG Magazine Extension KitFits FN 5.7×28 PistolAdds 10 RoundsBlackFeatures:10 Round ExtensionFN 5.7 Pistol MagazinesIncreases Capacity
CMMG Magazine Extension KitFits FN 5.7×28 PistolAdds 10 RoundsBlackFeatures:10 Round ExtensionFN 5.7 Pistol MagazinesIncreases Capacity