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Historical Firearms | Matthew Moss on Twitter: "McClean's Early Semi-Automatic Pistol https://t.co/AxrlfgumsY A look at Samuel McClean's complicated but ingenious gas-operated, rotating locked breech pistol, dating from 1898. #history #firearmshistory ...
![PDF] Breech Mechanism of a Short-Recoil Weapon with a Programmable Mass Separation | Semantic Scholar PDF] Breech Mechanism of a Short-Recoil Weapon with a Programmable Mass Separation | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/8bb61f2d9ed09b1bbea3bb34e7b92d620bcce34d/4-Figure2-1.png)