Here is how this weird system actually plays out:
• The first 16 patents weren't even guns. Before he got into firearms, Gaston Glock was making field knives, radiator parts, and military shovels. Those took up slots 1 through 16.
• The "17 rounds" thing is just a myth. Everyone thinks the Glock 17 gets its name because the standard magazine holds 17 bullets. It’s a total coincidence, but it definitely helped spread the rumor.
• They just kept counting up. Every single time the company designs something new and files a patent, the number ticks forward.
When he designed his very first pistol for the Austrian military, it just happened to be the 17th patent he had ever registered in his career. So, he called it the Glock 17.