Abstract: Buffer retainer, which buffer retainer comprises a body portion having an upper surface, and a retainer tab extending from the upper surface of the body portion, wherein the cross-sectional area of the retainer tab is smaller than the cross-sectional area of the body portion, wherein the body portion is configured to be set in a hole formed in a frame piece of a weapon, and wherein the retainer tab is configured to extend above surface of the frame piece via a channel to restrict movement of a buffer of the weapon, which channel extends between the end surface of the hole and the said surface of the frame piece, and which channel has smaller diameter than the said hole.

Abstract: A magazine catch body comprising a magazine and a magazine catch body comprising magazine catch buttons extended left and right, a magazine catch shaft connecting the magazine catch buttons to each other, and a magazine catch lever connected to the shaft for transmitting locking-releasing movements of the magazine catch buttons to the magazine to lock and release the magazine to the firearm, is disclosed. The magazine catch body comprises a spring around the shaft. The magazine catch buttons are substantially symmetrically located in respect of the firearm. The magazine catch buttons form the magazine catch body to one structural unity functionable as one mechanism. The magazine catch button extended left comprises a necked part pressing the lower receiver and receiving draw of the spring causing a holding force. In the necked part is an opening for a pin forming a turning axis of the magazine catch button extended left.

Abstract: Connection for connecting an upper receiver to a lower receiver of a weapon, which connection comprises front and rear take-down pins, and through-holes formed in both receivers for inserting the take-down pins through these holes to connect the upper and lower receiver to each other, wherein the rear take-down pin comprises an eccentric portion at its length for tightening the receivers against each other by turning the rear take-down pin.

Abstract: The invention relates to a firearm (100) comprising a barrel (101) comprising a gas opening, and a gas system (10), which gas system (10) comprises a gas block (11), a gas piston (12), a force transmitter assembly (13), an indexing part (21) and an indexing counterpart (22), gas openings (18). The gas block (11) is fixedly attached to the barrel and the gas piston (12) is positioned by the indexing part (21; 22). In the gas system (10) gas is configured to pass through the gas opening of the barrel (101) via the gas openings (18) of the gas system into the gas block (11) and to set the gas piston (12) to movement. In the gas system (10) the gas piston (12) during its movement backwards is configured to close the gas opening of the barrel (101) for a defined time period and the gas piston (12) is not transmitting power/energy from combustion gas to the force transmitter assembly (13) unless the gas opening/-s (18) is/are closed.

Abstract: The invention relates to a firing pin safety of a firearm, which firearm (100) comprises a firing pin safety (10), a hammer (17), a bolt (18), a bolt carrier (12) and a firing pin (15), in which the firing pin safety (10) comprises a safety lever (11) mounted on a bolt carrier (12) of the firearm, which firing pin safety (10) is configured to control movement of a firing pin (15) of the firearm.

Abstract: An enclosure, wherein the enclosure is at least partly formed of a layered material (3), the inner layer (1) of the layered material being formed of porous metal and the outer layer (2) of the layered material being formed of hygroscopic porous material.

Abstract: An electronic device including a sealed enclosure, the electronic components arranged inside the sealed enclosure and including high-loss high-temperature components, a main heat sink including ribs, wherein the high-loss high-temperature components are attached to the main heat sink and the ribs of the main heat sink are arranged outside the enclosure, a cavity formed inside the enclosure and divided into a plurality of channel-like sections, the channel-like sections configured for providing air flow guidance inside the enclosure and being interconnected at their ends, wherein at least one channel-like section contains the electronic components and at least one other channel-like section contains an air-to-air heat exchanger extending from inside the sealed enclosure to outside of the sealed enclosure, wherein the electronic components inside the at least one channel like section are adapted to be cooled by air flow inside the sealed enclosure.

Abstract: An exemplary electric apparatus includes a fan for generating a first airflow, a component space includes a secondary electric component, and a housing. In order to obtain efficient cooling solution one or more walls separate the component space including the secondary electric component from the first cooling element for preventing the first airflow from entering the component space. A second cooling element has a first end in the component space and a second end located outside of the component space for dissipating heat received from the secondary electric component to the first airflow.

Abstract: An enclosure, wherein the enclosure is at least partly formed of a layered material (3), the inner layer (1) of the layered material being formed of porous metal and the outer layer (2) of the layered material being formed of hygroscopic porous material.

Abstract: An exemplary electric apparatus includes a fan for generating a first airflow, a component space includes a secondary electric component, and a housing. In order to obtain efficient cooling solution one or more walls separate the component space including the secondary electric component from the first cooling element for preventing the first airflow from entering the component space. A second cooling element has a first end in the component space and a second end located outside of the component space for dissipating heat received from the secondary electric component to the first airflow.

Abstract: An electronic device including a sealed enclosure, the electronic components arranged inside the sealed enclosure and including high-loss high-temperature components, a main heat sink including ribs, wherein the high-loss high-temperature components are attached to the main heat sink and the ribs of the main heat sink are arranged outside the enclosure, a cavity formed inside the enclosure and divided into a plurality of channel-like sections, the channel-like sections configured for providing air flow guidance inside the enclosure and being interconnected at their ends, wherein at least one channel-like section contains the electronic components and at least one other channel-like section contains an air-to-air heat exchanger extending from inside the sealed enclosure to outside of the sealed enclosure, wherein the electronic components inside the at least one channel like section are adapted to be cooled by air flow inside the sealed enclosure.