Right. As brought up earlier, the bill affects (statistically) one murder a year, at most. (5 murders with rifles, 70+% of weapons used in murders sourced from outside the state).
It doesn't stop anything that would have caused a bit of difference in Aurora, Connecticut, or pretty much any other shooting that's happened in the last 100 years.
Why?
No background checks or ownership checks or even "can I see your driver's license" to purchase a high capacity magazine from anywhere else in the country.
Or printing your own (see video circulating today showing a printed 30 round AR magazine functioning flawlessly)
Or cutting the feed lips off and tacking together 3 10 round magazines to make a ~25(ish) round magazine.
Or buying an 80% AR receiver (unregulated), a placement jig, and a drill press and making an AR-15 firearm from scratch. (Which can be accomplished for UNDER $500, including 80% receiver, placement jig, and a harbor freight drill press).
Or ignoring the fact that securing your firearms won't prevent the theft. Plenty of safes are stolen right out of homes, or cut open with a gas operated cutting tool.
Or ignoring the fact that over 1 million banned guns are still in private hands inside the state borders, any of which could be stolen and used in a crime.
etc...