It should be stamped on the barrel It should be stamped on the barrel
Usually it printed on the left side of the breech or barrel.
top of barrel
Should be on the barrel near the receiver.
Look at gunparts.com or Numrich arms
Sometimes it on the top of the barrel near the rear sight. Sometimes it's on the side of the barrel.
Marlin Firearms Co.
It's usually on the left side of the loading chamber or barrel.
Have you tried a google search?
The Remington model 4 rolling block rifle was made between 1890-1933.If you have a model 4S military rifle,then these were made by Remington from 1913-1923.your rifle has either a 22.5in barrel,or a 24in barrel.These were chambered in .22,.25 Stevens,or 32 caliber.
The Stevens 311 is a double barrel shotgun.
Check barrel code.