if old 995 75 995rs 170
Each weapon will show a preference for one or two brands/bullet weights. You have to buy as many different types as you can afford and shoot to find out.
There really aren't any
100-500 USD
250 USD or so
about 120
500 or so
A mile or so
The Marlin 9mm Camp Carbine will accepts the S&W Mod 59 Magazine . Joe-R
Tech 9, 9mm rifle and a couple shotguns.
Best left to a gunsmith
The legality of carrying a 9 mm firearm depends on the specific laws of the jurisdiction you are in. In some places, you may be required to have a permit or license to carry a concealed weapon, while in others it may be prohibited altogether. It is important to familiarize yourself with the laws of your particular area to ensure you are in compliance.