You have 2 choices. First of all, Crosman airgun owns the Benjamin and Sheridan line of rifles and pistols.
Crosman offers a service to locate repair shops that repair older Crosman, Benjamin and Sheridan airguns.
Or you can contact one yourself See the 2 links below
This air rifle was made in 1965.
It was made between 1992 to 1998
I believe you are missing a digit. See the attached link. http://www.crosman.com/cs/dates-benjamin
Most likely around late 1956 according to Crosman who owns Benjamin.
Crosman air gun company owns Benjamin air guns. The offer a service to locate a repair center that restores or repairs older air guns no longer being made by Crosman or Benjamin. "Click on the link below" When the Crosman home page opens scroll down and click on "Find a service center" It will assist you in locating someone to repair your Benjamin air rifle.
Yes you can replace the seals or worn parts. OR, Crosman air gun owns Benjamin. Crosman offers a free service to locate shops who repair old rifles. See the link below.
Usually it's on the barrel close to the breech. Unless it's a really old Benjamin and then it may not have one.
Contact Crosman: www.Crosman.com they have a service on their web page that directs you to people who repair old Benjamin rifles. Crosman Owns and makes Banjamin rifles. The name Benjamin Franklin was a marketing stunt to sell rifles back in the 60's & 70's. It was made between 1969 to 1992
The Benjamin model 310 is part of a series of rifles that included: 310 BB rifle 317 .177 pellet rifle 322 .22 pellet rifle All were made from 1940 to 1969 Today Crosman owns Benjamin and Sheridan air gun's, see the link below for a partial list of Dates of Manufacture. Scroll down on the list until you find the 310 section. It may help if you have the serial number.
As far as I can find, Benjamin made a pump handgun model 112 from 1938 to 1941. I could not find anything on a rifle with that model number.
It was made in 1980....
Crosman offers a service to locate shops who repair old rifles and guns that are no longer in production. You can find the link on their home page down at the bottom. When the page opens click on "find a service center." See link below.