In 2019 a federal judge put a temporary stay on California’s ban on the sale of larger capacity magazines. The stay was for two weeks while the two teams of lawyers prepared their briefs. During that two week period something like 10 million new large capacity magazines came into and were sold in the state. I may be exaggerating the number, but it was huge. In just two weeks. Every gun owner I know ran out to buy whatever they could. Even if it didn’t fit a gun they currently owned, they bought it anyway.
The stores shipped every magazine in the country they had to California during that period.
And HERE is the label PMAG had on their box of D60 magazines shipped to California!
https://www.gunbroker.com/item/895453736
Another view of the Pmag boxes sent to California.
https://www.gunsamerica.com/992149340/3-Brand-New-Magpul-D-60-60-Round-Drum-Magazines.htm