Type of handgun made by the Ruger company. The hammer must be cocked before each shot. Just pulling the trigger without cocking the gun does nothing.
You will have to define further. Ever made? Rifle or handgun? Bolt, semi, single shot, revolver, pistol?
You can get a manual for free by going to Ruger's web site and requesting it.
Impossible to answer without more information.
75-160 USD or so
100-350 or so
100-300 USD or so
Sig Sauer, Sturm Ruger are a couple of manufacturers.
If you mean a ruger, 100-600 depending on specifics
In the south, we see prices from 375-475 for good used p90s
75-1000 USD depending on EXACTLY what you have.
Not enough information to answer.My information which was found in ruger and his guns,indicates that this block of serial numbers was assigned to the ruger standard semi-automatic Mark-1 .22cal handgun in 1974.