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The Bren Mk II design simplified production by replacing the drum rear sight with a ladder design, making the bipod legs non-adjustable, simplifying the gun butt, reducing the use of stainless steel, among other steps that reduced the cost by 20% to 25%; Mk II was approved in September 1940 and entered production in 1941. While the Bren Mk III ...
A similar set of gyroscopes provided a stabilized platform for the bombardier to sight through, although the complex interaction between the bombsight and autopilot was not used. The Carl Zeiss Lotfernrohr 7 , or Lotfe 7, was an advanced mechanical system similar to the Norden bombsight, although in form it was more similar to the Sperry S-1.
A United States Marine firing an M4 carbine, using an EOTech holographic sight to aim.. The first-generation holographic sight was introduced by EOTech—then an ERIM subsidiary—at the 1996 SHOT Show, [2] under the trade name HoloSight by Bushnell, with whom the company was partnered at the time, initially aiming for the civilian sport shooting and hunting market.
Iron sights are a system of physical alignment markers used as a sighting device to assist the accurate aiming of ranged weapons such as firearms, airguns, crossbows, and bows, or less commonly as a primitive finder sight for optical telescopes. Iron sights, which are typically made of metal, are the earliest and simplest type of sighting device.
Rear, rotating diopter drum sight of a SIG SG 550 service rifle.The viewing aperture above the "3" (denoting the 300 m setting) can be seen. The diopter is in principle a vertically and horizontally (elevation and windage) adjustable occluder with a small hole (aperture), and is placed close in front of the shooter's aiming eye.
Two black soldiers of the Rhodesian African Rifles (RAR) manning a FN MAG General-purpose machine gun (GPMG) aboard a patrol boat on Lake Kariba, December 1976.. The Rhodesian Bush War, also referred to as the Rhodesian Civil War, Zimbabwe Independence War or Zimbabwean War of Liberation, as well as the Second Chimurenga, was a military conflict staged during the Decolonisation of Africa that ...
The stock is matte black synthetic instead of a walnut stock. The stalker is the only model to feature iron sights. [5] The barrel is 20, 22, 23 or 24 in (510, 560, 580 or 610 mm) long. LongTrac and ShortTrac models feature an aluminum-alloy receiver, a plastic trigger guard and floorplate, and more stylised stock.
Scheme of a molten-carbonate fuel cell. Molten-carbonate fuel cells (MCFCs) are high-temperature fuel cells that operate at temperatures of 600 °C and above.. Molten carbonate fuel cells (MCFCs) were developed for natural gas, biogas (produced as a result of anaerobic digestion or biomass gasification), and coal-based power plants for electrical utility, industrial, and military applications.