Pro-2A folks push back against further restrictions because the restrictions are already numerous and do not achieve their stated aim.
Limiting magazine sizes is really annoying for people who comply with the law - it has no affect on those breaking it. Extending and manufacturing many common magazines is trivial.
Red flag laws are used before a crime is committed to limit a right. There is no defense to them since you can't defend a non-crime and it is impossible to reclaim your property. They are ripe for abuse by anyone upset at you.
There is already a safe storage requirement AND a mandate that locks be issued with a firearm. What is not required is that someone spend $400 or more for a 200lb box that may not be practical to install in an apartment - a requirement which would most heavily impact poor and minority firearm owners.
I have debated many folks who support gun control - they believe people do not have a right to bear arms, often do not understand firearms or the current firearm laws, and are afraid of firearms.
One only needs to look at California to see that even the most insane gun control has no affect except to limit a constitutional right to those who can afford lawyers and insane requirements.
If you think voter ID is a naked attempt at jim crow, you have no right demanding licensing requirements for firearms.