The Shark 50 Cal. BMG Bullet Keyring is made from a real once fired bullet shell casing and is fitted with an Brass tip.
These decommissioned bullets are safe because they do not contain any active gun powder or primer. They will not explode and they cannot be reused in a gun. Due to the fact that they look like the real thing, it is wise to leave them at home when you are planning on flying or going to school.