The 1911, for civilian or police sales, has taken 100 years to sell 2-3 million guns.
And you know this because you've compiled all the production figures from all the dozens of 1911 manufacturers over the last 100yrs???
Glock also practically gives guns away to law enforcement. Sort of the Microsoft of the gun world.
Did the Marine Corps just order a bunch of new Glocks, or did they order 1911's from Colt?
I shot and enjoyed them for 15yrs but no way is a plastic gun from Austria "America's Sidearm".