FN FAL system of operation is described as which gas mechanism?

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Multiple Choice

FN FAL system of operation is described as which gas mechanism?

Explanation:
Gas tappet operation defines how the FN FAL cycles. Gas from the bore is diverted through a gas block to a tappet, which then drives the operating rod that moves the bolt carrier and the tilting bolt. This tappet-driven path is a defining feature, setting it apart from direct impingement (where gas acts directly on the bolt carrier) and from simple short- or long-stroke piston descriptions. Some FAL variants are select-fire, allowing semi- or fully automatic fire, but the gas mechanism remains tappet-based. So the description that fits this system is gas tappet, select fire.

Gas tappet operation defines how the FN FAL cycles. Gas from the bore is diverted through a gas block to a tappet, which then drives the operating rod that moves the bolt carrier and the tilting bolt. This tappet-driven path is a defining feature, setting it apart from direct impingement (where gas acts directly on the bolt carrier) and from simple short- or long-stroke piston descriptions. Some FAL variants are select-fire, allowing semi- or fully automatic fire, but the gas mechanism remains tappet-based. So the description that fits this system is gas tappet, select fire.

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