Shop › FZ 9MM BCG NO HAMMER NICKEL BORON FZ 9MM BCG NO HAMMER NICKEL BORON $199.99 FailZero AR9. 9MM Bolt Carrier Group, Nickel Boron FZ-9MM-BCG Quantity: Add To Cart Added! FailZero AR9. 9MM Bolt Carrier Group, Nickel Boron FZ-9MM-BCG