This Marlin manufactured second variation outer magazine tube is for the model 40 Coast to Coast semi-auto rimfire rifle manufactured between 1968 and June of 1975 and designed for the second variation front sight / magazine tube. This magazine tube is in very good condition with light wear and having a few specks of rust. (file photos)

Note: Model 40 rimfire rifles with the following years of manufacture and serial numbers have been observed with this part: 1971: 71474846