No...something in people, beliefs or lack thereof have been the problem.
We've had guns freely available in the US for a LONG time.
Remember it's only been since the mid 80s since we had background checks....since I believe 1986 that would could'n't buy a modern NEW full auto machine gun.
Hell, I remember in the 70's, you didn't have to go to a "Gun store" to buy a gun, they sold rifles at places like Western Auto, and your local hardware store.
It wasn't long ago you could order a gun via a catalog and have it mailed to your front door without any kind of background check.
And we didn't have the "mass" shootings like you see today....
There were a few, yes, but FEW and far between...no one was shooting up schools all the time or the like.
We have more gun control today than ever...and the problem seems to be getting worse.
It isn't the guns....it's broken people. What's the coincidence?
More broken and single parent homes. Raising generations to not properly value the human life....
Let's try to figure out what changed in PEOPLE since the 80's and earlier....