 Company founder Grant Major says it's more reliable than online ammo purchases, which also are legal. It's very easy to click on a website and say, yes, I am 21. He says his vending machines verify it. Jim Ryan, ABC News. A new discovery from the American Revolution. Five musket balls were recently unearthed at Minuteman National Historical Park. That's north of Boston. Experts say they were fired at British soldiers in 1775 during the event known as the Shot Heard Round the World.