That's true. I looked up some gun stats, as I exercise my second amendment right as much as possible.
The United States has approximately 393,000,000 firearms or 120.5 per 100 citizens...far and away #1 in both categories.
Second is India in total firearms with 71,000,000...but only 5.3 per 100 citizens
The country with the second highest firearms per 100 citizens is the Falkland Islands with 62 per 100.
Also, there are only three countries in which they have a written constitution that has the protected right to bear arms. Those countries are the United States, Mexico, and Guatemala.
***These numbers are from a study done back in 2017*** I'm guessing by now its easily over 400,000,00 for the U.S.