How old is western auto supply model 105 22caliber rifle?

No records.The Western Auto model 105 .22cal rifle was made twice for Western Auto.The first time was back in the 1930,s and was made by the Marlin Firearms Company.These were the Marlin model 80 and were produced from 1934-1939.The Second model 105 was made for Western Auto from 1971-1988 by Marlin,and these were the Marlin model 780.The age of your firearm should dictate which one you have.