We can have any caliber we want in long and hand guns.
The main restriction is that you can't own any semiauto weapon with detachable magazine whose caliber is bigger than .22, this is the worst crap, and it was approved a few years ago, I want to own a FAL and its impossible, you need a judge to give you a decree justifying why you need a semiauto rifle, its almost impossible to get that. You need to have a decree for each gun you want, you can't use the same decree to get multiple guns.
Some "forbidden guns" owners try to sell them, but as is impossible to get the decree they can't.
CCW licences are not given anymore, even people with much money that I know lost it.
You need to register all your guns and reloading equipment, approve an exam, psi test and background check every 5 years to be able to use guns, and pay for the forms.
Prices are extremely fucking high, because most guns are imported and because are guns, ammo is super expensive too, I think is a cover way to ban guns, just make them a luxury.