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Eugene Stoner’s Gas operated bolt and carrier system Patented

September 6, 2022

Sept 6, 1960

Direct impingement is a type of gas operation for a firearm that directs gas from a fired cartridge indirectly (through the barrel, through a gas block, and then through a gas tube) into the bolt carrier or slide assembly to cycle the action.

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Date:
September 6, 2022
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