A Justice Department study of the assault weapons ban found that it was responsible for a 6.7% decrease in total gun murders, holding all other factors equal.
In the study she cites it states:
Our best estimate of the impact of the ban on state level gun homicide rates is that it caused a reduction
of 6.7% in gun murders in 1995 relative to a projection of recent trends. However, the evidence is not strong
enough for us to conclude that there was any meaningful effect (i.e., that the effect was different from zero).
The same study also found that “Assault weapons are disproportionately involved in murders with multiple victims, multiple wounds per victim, and police officers as victims.”
Her cited source states:
Using a variety of national and local data sources, we found no statistical evidence of post-ban decreases
in either the number of victims per gun homicide incident, the number of gunshot wounds per victim, or the
proportion of gunshot victims with multiple wounds. Nor did we find assault weapons to be overrepresented in a
sample of mass murders involving guns
The use of assault weapons in crime declined by more than two-thirds by about nine years after 1994 Assault Weapons Ban took effect.
Her cited source states:
The decline in the use of AWs has been due primarily to a reduction in the use of assault pistols (APs), which are used in crime more commonly than assault rifles (ARs). There has not been a clear decline in the use of ARs, though assessments are complicated by the rarity of crimes with these weapons and by substitution of post-ban rifles that are very similar to the banned AR models.
The percentage of firearms seized by police in Virginia that had high-capacity magazines dropped significantly during the ban. That figure has doubled since the ban expired.
Standard pistol magazines have a capacity of 12-15 rounds. So a standard magazine manufactured for a pistol is automatically considered to her to be a “high capacity magazine.
When Maryland imposed a more stringent ban on assault pistols and high-capacity magazines in 1994, it led to a 55% drop in assault pistols recovered by the Baltimore Police Department.
Her assumption is based on a “letter to the editor” written by Douglas Weil and Rebecca Cox who worked for “The Center to prevent Handgun Violence” The data they used was based on number of “assault Pistols” recovered in the first 6 months of the year (not the whole year) and then extrapolated what they thought should have been during the first 6 months of the ban (again why not the whole year?) Again these are so called Assault Pistols, this legislation concerns Riffles.
37% of police departments reported seeing a noticeable increase in criminals’ use of assault weapons since the 1994 federal ban expired.
Since her cited report is not available online (must be purchased from PERF) there is no way to verify or disprove her statement. Suffice it to say that most guns purchased come with a standard magazine that holds more than 10 rounds. It would stand to reason that many weapons used would have more than 10 rounds which is the standard she is using to make this assumption. These are not extended or high capacity magazines.
Finally, In Feinstein’s list of banned weapons she lists the Armalite M15 22LR Carbine. This is a .22 Caliber long riffle cartridge weapon. This proves it’s based on looks not the actual capacity or power of the weapon.