The difference between Falling block and Rolling block
When used as nouns, falling block means a single-shot firearm action in which a solid metal breechblock slides vertically in grooves cut into the breech of the rifle and actuated by a lever, whereas rolling block means a form of firearm action where the sealing of the breech is done with a specially shaped breechblock able to rotate on a pin.
check bellow for the other definitions of Falling block and Rolling block
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Falling block as a noun:
a single-shot firearm action in which a solid metal breechblock slides vertically in grooves cut into the breech of the rifle and actuated by a lever.
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Rolling block as a noun:
A form of firearm action where the sealing of the breech is done with a specially shaped breechblock able to rotate on a pin.