Easy way to counter this is to reference that Washington Post article yesterday showing that the cops didn’t bother to look at CA’s registration database, where they would have been able to tie out their existing knowlege that he was suicidal with information that he’d bought three handguns and 40 magazines.
Iow, existing laws and resources aren’t being used, which is an arguement against implementing even more laws and resources that won’t be used ...
I know that guns are in the California state database, but magazines? Unless you live in NYC, you can buy all the 10-round magazines you'd ever want on E-bay.
(In that sense, they are much like the other tools that Mr. Rodgers used in his murderous rampage -- machetes, hammers and BMWs.)