I doubt if anyone knows exactly who made the very first rifle. Long arms with rifled barrels have been made since the 1600's at least.
At least during the Civil War.
In the year 1890,as a model No.4 rolling block rifle.
Depends on in which nation the rifle was built.
Winchester records show that rifle as being built in 1896. Value would be the same as any rifle in that configuration built prior to WWII. There is no extra value in that year of manufacture.
That was either the Spencer is .50 caliber or the Henry in .44 Rimfire.
Custom built
The first model 70 bolt action rifle was made in the year 1935 and they have been made since.
Probably the Russian built PTRD-1941 anti tank rifle in 14.5 mm.
The German FG42 was the first true assault rifle.
Impossible to answer without a detailed description of the rifle being built.
The British made 'Baker Rifle' was the first widely used Infantry rifle in the early 1800's
My father gave me a rifle for Christmas. I fired my rifle for the first time. My rifle misfired.