Why Did Glock Dub Its First Handgun the Glock 17?

It wasn't because it held 17 rounds in the magazine.

Glock - Wikipedia

This is the handgun from Glock that lost the race to replace the

Gaston Glock: Firearms Revolutionary - Inside Safariland

Glock 46: a new rotating barrel pistol for the German Police

Am I the only one in the group with a 40 problem solved PDW? : r

Innovation brought the rise of the Glock handgun - CNET

What Gen Is My Glock – A Brief History of Glock Firearms Aimed at

The 9mm Pistol: Dominating 120 Years of War and Peace

Exploring the World's Most Iconic Firearms - Hi-Lux Optics

Glock Model and Caliber Guide - Wing Tactical