You are correct, this article is just trying to confuse you. Glocks come in many shapes and sizes, so it is easy to mislead people. My favorite Glock is a shiny one that has a cylinder that holds the ammunition and fires 44 Mag.
“My favorite Glock is a shiny one that has a cylinder that holds the ammunition and fires 44 Mag.”
Seems awfully small to me..... mine shoots 18” bolts.