You gotta give credit to the HK VP70, which was the first polymer-framed pistol with a striker mechanism. Predated the Glock by 12 years.
Plus the team of engineers he hired to do the design work.
The Glock is a good pistol we are lucky to live in a time where one has the choices of hand guns that we do.
Just think of the wonderful firearm designs we would have if we were not strangled. By GCA34 and GCA68.
I remember seeing one of those at a gun show back in the '80s. I thought it looked remarkably like a plastic toy pistol I had as a kid, particularly in the shape of the trigger and trigger guard. The toy pistol may have been something out of the "Star Trek" merchandise catalog - it launched little colored plastic disks that spun like miniature Frisbees.
Like Apple fans that claim Apple invented everything so do the Glock fans.
Not to mention the many striker fired pistols that were not polymer. I had a Jennings J-22 back around 85 that was striker fired.