There were approx 498,000 Model 6 rimfires made from 1901-1933, chambered in: 22 S, 22 L, 22 LR, 32 S, 32 L
Model 6: 1901-1903
New Model 6 Improved: 1903-1929
Improved Model 6: 1929-1933
Some refer to them as a falling block action, and the Remington archives show it as a rolling block centerfire, but it's action is actually more similar to the Stevens swinging block.
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