Rolling blocks are most often associated with firearms made by Remington in the later 19th century ; in the Remington action the hammer serves to lock the breech closed at the moment of firing, and the block in turn prevents the hammer from falling with the breech open.

Rolling blocks are most often associated with firearms made by Remington in the later 19th century ; in the Remington action the hammer serves to lock the breech closed at the moment of firing, and the block in turn prevents the hammer from falling with the breech open.

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