Read the instructions that came with it. If you don't have them ask the manufacturer for a copy.
25-100 USD, 12 gauge is a shotgun, not a rifle.
8
12 gauge
Nothing. Gauge refers to shotgun bore
Shotgun with buckshot, 30 caliber rifle, etc.
Never heard of a 12 gauge rifle.
You can have one made.
No. Caliber is the term
First, there is no such thing as a 16 gauge rifle. You can have a 16 gauge shotgun with a rifled barrel. Second, without knowing who made it there is no way to give an even moderately accurate worth.
It is a 22 Long Rifle.
We need make, model, and condition- and it is not a rifle- it is a shotgun.
It is necessary to read the density and the quality of the gauge. You should see the lower side.