I said it might save lives. Isn't that enough? You can keep your gun if you need it.
The bill is mostly a reaction to the increased number of mass shootings. The pistol grip is used when shooting from the hip. In a mass shooting, not having it makes a difference. In legitimate use (hunting, protection), it doesn't make that much of a difference.
It's not about taking away your guns. Firstly because your handgun is fine, and most rifles are probably fine as well. And secondly, the previous ban wasn't that much different, and gun manufacturers simply started making version that were legal, so again, plenty of guns for everyone to enjoy.