1/2″ x 28 adapter for EFK Five seveN Fire Dragon Threaded Barrel

Add 1/2″ x 28 threads to your FN Five seveN EFK Fire Dragon Threaded Barrel. EFK Fire Dragon Five Seven Threaded Barrel thread pitch is 10mm, which will not fit most suppressors. You must purchase this adapter if you intend on using a 1/2″ x 28 accessory.