Like Dura-matic M-100, with slightly different locking method for thumb nut take-down. Produced 1954 to 1970. Later appeared renamed "Plinker" M-101 in 1971 to 1973. Plinker not available with both barrel combinations. Slightly modified version was sold by Sears Roebuck & Co. as J. C. Higgins M-80. NOTE: Add $150 premium for factory combination; 10 percent premium for box with papers.