Take it to a gunsmith for exact measurement
What is your question?
S-130 is a type of rear sight used on Mossberg rifles- but not the model of the rifle. Take a look on the barrel.
"IF" it's on the rifle it will be on the left side of the barrel just below the rear sight. However it may not be on the rifle at all.
Most came with a tooth ramped iron sight.But there could be different styles depending on the age of your Winchester model 1894 rifle,such as a peep sight,a full buckhorn sight,etc.
This BB rifle is made by Daisy. The number will be on the barrel in front of the rear sight.
adjust rear sight up for distance
It depends on which model you are talking about. Benjamin has made over 70 different models over the years.
Sometimes it on the top of the barrel near the rear sight. Sometimes it's on the side of the barrel.
I would start my search at numrich gun parts corp.They can be found on the web.
Aligning front and rear sites to aim
Try gun shops, gun shows, pawn shops, want ads, egunparts.
Start your search with numrich gun parts corp.They can be found on the internet.