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Bryant Ridge's AnalysisThe Remington 1100 is a gas-operated semi-automatic shotgun introduced by Remington Arms in 1963. The Model 1100 bleeds off-gases to operate the action through ports in the barrel near the fore-end. The gasses then drive a steel action sleeve that fits around the magazine tube and connects to the bolt carrier to the rear, ejecting the spent shell. A fresh shell is released from the magazine, which trips the carrier release, and the action spring in the stock pushes the bol …