@hightor,
The New York Times wrote:In the 1970s and 1980s, the guns most commonly used in crime tended to be revolvers or small, inexpensive pistols that fired .22-caliber rounds . . . .
. . . . instead of buying guns that fired smaller bullets, people started purchasing ones that fired rounds that were 9 millimeters wide, about 0.35 inches, then 0.40 and 0.45 inches.
Guns that fire big bullets used to also be big. But improvements in technology have meant that large-caliber weapons are now available as pistols that can be more easily carried and hidden.
These advances, intended for the legal self-defense market, have spread to the criminal one, too.
The only reason why the gun industry developed subcompact 9MMs that carry ten rounds in the mid-1990s was because from 1994 to 2004 the left outlawed guns that carry more than ten rounds.
So if you want to blame anyone for the fact that criminals now use subcompact 9MMs instead of little mouse guns, you should go blame the nearest leftist.
The left tried to make the problem even worse. The left always tries to make everything worse. When criminals replaced their mouse guns with subcompact 9MMs, the left pushed to ban all guns smaller than a ten-round .45 ACP.
If the left had succeeded, that would have made everyone, criminals included, start using .45s (bigger-yet bullets).