“A conservative estimate already, there are at least 20 million guns in Europe, the number is rising.”
Europe has a long way to go. The population of Europe is 508 million. It has about 20 million guns ... maybe more.
The population of the United States is 330 million. It has about 370 million guns...
I would say that Europe has about 500 million guns to go to catch up.
Who cares?
20 million guns can do it easily. Regardless of what you’d like to think.