Abstract: The invention relates to a silencer device for a firearm, in particular for a rifle or another long or short firearm and a silencing method, which comprises: at least two closing flaps (10) mounted across the axis on the barrel of the firearm in order to provisionally seal the barrel after the ammunition has passed and to prevent the passage of the combustion gases and the sound wave towards the mouth of the barrel when a shot is fired, an actuation unit (2, 4, 5) including at least one opening (1, 3) made in the barrel of the firearm upstream from the closing flaps (10) to form a gas intake (1, 3) moving a control mechanism (6-9); the control mechanism (6-9) including at least two arms of an amplitude lever (8, 12) pivotably mounted on pivots (7) attached to the barrel, each arm of the amplitude lever (8, 12) being coupled to either one of the closing flaps (10), the actuating unit (2, 4, 5) engaging with the control mechanism (6-9) to allow a transverse movement of the closing flaps (10) between an open pos

Abstract: The invention relates to a silencer device for a firearm, in particular for a rifle or another long or short firearm and a silencing method, which comprises: at least two closing flaps (10) mounted across the axis on the barrel of the firearm in order to provisionally seal the barrel after the ammunition has passed and to prevent the passage of the combustion gases and the sound wave towards the mouth of the barrel when a shot is fired, an actuation unit (2, 4, 5) including at least one opening (1, 3) made in the barrel of the firearm upstream from the closing flaps (10) to form a gas intake (1, 3) moving a control mechanism (6-9); the control mechanism (6-9) including at least two arms of an amplitude lever (8, 12) pivotably mounted on pivots (7) attached to the barrel, each arm of the amplitude lever (8, 12) being coupled to either one of the closing flaps (10), the actuating unit (2, 4, 5) engaging with the control mechanism (6-9) to allow a transverse movement of the closing flaps (10) between an open pos

Abstract: The invention relates to a silencer device for a firearm, in particular for a rifle or another long or short firearm, and to a silencing method, said device comprising: a flap mechanism (10) comprising at least one closing flap (10) mounted transversely to the axis on the barrel (42) of the firearm in order to temporarily seal the barrel after ammunition has passed through and to prevent the passage of the combustion gases and the sound wave towards the mouth of the barrel when a shot is fired; and an actuating unit (31,34,35) comprising a mobile part (31) arranged axially on the barrel of the firearm in order to move a control mechanism (6), where the mobile part (31) axially comprises an inner borehole for allowing ammunition to pass through, the control mechanism (6) includes at least one amplitude lever arm (8) pivotably mounted on a pivot (7) attached to the barrel, and each amplitude lever arm (8) is respectively coupled to a closing flap (10), the mobile actuating unit (31,34,35) cooperating with the c