From Ammo.com, this little analysis of where the choirboy class gets the guns they use to commit crimes.

I’m assuming that the 43% includes guns actually stolen by the scrotes, as well as getting them from other scrotes.
And the calibers most often used:

Not too many surprises there. Follow the link for details, and many thanks to Sam at Ammo.com for the update.
The left: “we must ban people who know potential criminals from owning guns so they can’t give guns to criminals”.
The left also: “anyone who is not a leftist is a criminal”.
“Obtained firearm from underground market or off the street.”
Is there a distinction here? In no case are these scrotes actually manufacturing firearms, so “Underground Market” and “Off the Street are synonyms for the illegal market formerly known as the “Black Market.”
Not to be triggering anyone over that term.