The most iconic, recognizable handgun of all time, the Colt Single Action Army, is celebrating its 150th birthday this year. It's been in continuous production virtually the whole time (with two short breaks in the mid 20th century), and remains in production today. I don't think there is any firearm, of any type, that can equal that. Or, for that matter, any artifact of modern life. What a fantastic, eminently useful little gun. Here's to another 150 years!