Each Silver Bullet Bullion is minted out of 0.999 fine silver. And is designed similar to some of the bullets that have been saving America since ages. This bullet pays homage to a bullet that was designed by John Browning in 1904. John Browning designed the bullet for using it in his semi-automatic 0.45 pistol. This design was further approved by the United States army for use in M1911 pistol.