Isn't the real solution for gun crime stiffer penalties?

No penalty doesn’t work it’s a joke like war on drugs 

That will not stop criminals.

No one has taken this suggestion seriously (or at all), but let people have all the guns they want; just make the ammunition EXTREMELY expensive.  Mass shooters would think twice if every bullet cost $50.  Rifle ammo could stay the same, since you can't conceal a rifle on your body easily.

Also, mandatory mental health counselling might also be part of the plan.

TWO common sense  things  background checks and no more CC i feel less safe having poorly trained morons acting like a bunch of cowboy heroes .

Yes.  Anyone who commits a mass murder should be executed not just once, but repeatedly for each victim they murdered.   In states with no death penalty, they should receive multiple life sentences, one life sentence for each victim.   

Some mass murderers may not be dissuaded by a single life sentence, but surely having to spend 10 lives in prison will make them reconsider.    

It should be a wide range of things including making it harder to buy a gun and stiffer penalties for the criminal AND the gun owner in case the gun owner fails to report the theft of the gun which may be used on a shooting....

No.  Just ban assault weapons.

We need metal detectors outside every business. No shoes, no shirt, no mask, no gun scan, no service. 

There ARE stiffer penalties on the books, including federal prison sentencing, but they are not being used.

Penalties for what?  Murder?  Do you think the guy who shot up the grocery store in Colorado cares whether he lives or dies anyway?