https://www.guns.com/news/2019/07/26/federal-court-semi-autos-indistinguishable-from-m-16s
FEDERAL COURT: SEMI-AUTOS ‘INDISTINGUISHABLE’ FROM M-16S
The order, in a case brought by several gun owners in 2017 seeking to declare California’s “assault weapon” ban unconstitutional, saw U.S. District Judge Josephine Staton side with the state’s point of view. Staton, extensively citing briefs in the case from anti-gun groups such as the Brady Center, Everytown and Giffords, found that semi-autos banned either by name or cosmetic features such as collapsible stocks or muzzle brakes were basically military-grade hardware.
“Because the Court concludes that semiautomatic assault rifles are essentially indistinguishable from M-16s, which Heller noted could be banned pursuant to longstanding prohibitions on dangerous and usual weapons, the Court need not reach the question of whether semiautomatic rifles are excluded from the Second Amendment because they are not in common use for lawful purposes like self-defense,” said Staton, an appointment by President Obama. Prior to stepping up to the federal bench, Staton was a lawyer in private practice in San Francisco and a California Superior Court judge appointed by Gov. Gray Davis just before he was recalled.
Staton also quoted that the rate of fire of such guns, listed in the order as “300 to 500 round per minute rate” makes semiautomatic rifles “virtually indistinguishable in practical effect from machineguns.”