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- A barrel shroud is an external covering that envelops (either partially or full-length) the barrel of a firearm, to prevent unwanted direct contact with the barrel (e.g. accidental collision with surrounding objects, or the user accidentally touching a hot barrel, which can lead to burns). Moving coverings such as pistol slides, fore-end extension of the gunstock/chassis that do not fully encircle the barrel, and the receiver (or frame) of a firearm itself are generally not described as barrel shrouds, though they can functionally act as such. In shotguns, a thin, slim partial shroud known as a rib is often mounted above barrel to shield away the mirage generated by barrel heat, which can interfere with aiming. Full-length barrel shrouds are commonly featured on air-cooled machine guns, where frequent rapid bursts or sustained automatic fire will leave the barrel extremely hot and dangerous to the user. However, shrouds can also be utilized on semi-automatic firearms, especially the ones with light-weight barrels, as even a small number of shots can heat up a barrel enough to injure the user in certain circumstances. Barrel shrouds are also used on pump-action shotguns. The military trench shotgun features a ventilated metal handguard with a bayonet attachment lug. Ventilated handguards or heat shields (usually without bayonet lugs) are also used on police riot shotguns and shotguns marketed for civilian self-defense. The heat shield also serves as an attachment base for accessories such as sights or sling swivels. (en)
- 槍管罩筒（英語：Barrel shroud或Ventilated handguard、Heat shield；又譯：通風式護手、槍管隔熱罩）是附接於火器（熱兵器）槍管外圍的覆蓋物，用以部分或完全地包覆著槍管，從而防止使用者因接觸過熱的槍管而被灼傷。 (zh)
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- 槍管罩筒（英語：Barrel shroud或Ventilated handguard、Heat shield；又譯：通風式護手、槍管隔熱罩）是附接於火器（熱兵器）槍管外圍的覆蓋物，用以部分或完全地包覆著槍管，從而防止使用者因接觸過熱的槍管而被灼傷。 (zh)
- A barrel shroud is an external covering that envelops (either partially or full-length) the barrel of a firearm, to prevent unwanted direct contact with the barrel (e.g. accidental collision with surrounding objects, or the user accidentally touching a hot barrel, which can lead to burns). Moving coverings such as pistol slides, fore-end extension of the gunstock/chassis that do not fully encircle the barrel, and the receiver (or frame) of a firearm itself are generally not described as barrel shrouds, though they can functionally act as such. (en)
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- Barrel shroud (en)
- 槍管罩筒 (zh)
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