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The 1913 rail (MIL-STD-1913 rail) is an American rail integration system designed by Richard Swan [1] that provides a mounting platform for firearm accessories. It forms part of the NATO standard STANAG 2324 rail. It was originally used for mounting of telescopic sights atop the receivers of larger caliber rifles.
Steam locomotives of the Chicago and North Western Railway in the roundhouse at the Chicago, Illinois rail yards, 1942. The Timeline of U.S. Railway History depends upon the definition of a railway, as follows: A means of conveyance of passengers and goods on wheeled vehicles running on rails, also known as tracks.
Aerial view of the facility in 1937. The Picatinny Arsenal (/ ˈ p ɪ k ə t ɪ n i / or / ˌ p ɪ k ə ˈ t ɪ n i /) is an American military research and manufacturing facility located on 6,400 acres (2,590 ha) of land in Jefferson and Rockaway Townships in Morris County, New Jersey, United States, encompassing Picatinny Lake and Lake Denmark.
This improved rail design permitted higher train speeds and more reliable operation. Discovery of high-quality iron ores in the mid-19th century, particularly in the Great Lakes region, led to the fabrication of better-quality rails. [101] [102] Steel rails began to replace iron later in the 19th century.
The Picatinny rail has a similar profile to the Weaver, but the recoil groove width of the Picatinny rail is 0.206 in (5.23 mm) versus 0.180 in (4.57 mm) of the Weaver rail/mount, and by contrast with the Weaver, the spacing of the Picatinny recoil groove centers is consistent, at 0.394 in (10.01 mm). [5]
States (highlighted in purple) whose capital city is also their most populous States (highlighted in blue) that have changed their capital city at least once. This is a list of capital cities of the United States, including places that serve or have served as federal, state, insular area, territorial, colonial and Native American capitals.
1970, 21 June – Penn Central, the dominant railroad in the northeastern United States, became bankrupt (the largest US corporate bankruptcy up to that time). Created only two years earlier in 1968 from a merger of several other railroads, it marked the end of long-haul private-sector US passenger train services, and forced the creation of the ...
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