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  1. M1911 pistol - Wikipedia

    en.wikipedia.org › wiki › M1911_pistol
    • History
    • Design
    • Versions
    • Users
    • Specifications
    • State Firearm
    • Similar Pistols
    • See Also
    • Further Reading
    • External Links

    Early history and adaptations

    The M1911 pistol originated in the late 1890s as the result of a search for a suitable self-loading (or semi-automatic) pistol to replace the variety of revolvers then in service. The United States was adopting new firearms at a phenomenal rate; several new pistols and two all-new service rifles (the M1892/96/98 Krag and M1895 Navy Lee), as well as a series of revolvers by Colt and Smith & Wesson for the Army and Navy, were adopted just in that decade. The next decade would see a similar pace...

    Service history

    Following its success in trials, the Colt pistol was formally adopted by the Army on March 29, 1911, when it was designated Model of 1911, later changed to Model 1911, in 1917, and then M1911, in the mid-1920s. The Director of Civilian Marksmanship began manufacture of M1911 pistols for members of the National Rifle Association in August 1912. Approximately 100 pistols stamped "N.R.A." below the serial number were manufactured at Springfield Armory and by Colt. The M1911 was formally adopted...

    Browning's basic M1911 design has seen very little change throughout its production life.[page needed] The basic principle of the pistol is recoil operation.[page needed] As the expanding combustion gases force the bullet down the barrel, they give reverse momentum to the slide and barrel which are locked together during this portion of the firing cycle. After the bullet has left the barrel, the slide and barrel continue rearward a short distance.[page needed] At this point, a link pivots the rear of the barrel down, out of locking recesses in the slide, and the barrel is stopped by making contact with the lower barrel lugs against the frame. As the slide continues rearward, a claw extractor pulls the spent casing from the firing chamber and an ejector strikes the rear of the case, pivoting it out and away from the pistol through the ejection port. The slide stops its rearward motion then, and is propelled forward again by the recoil spring to strip a fresh cartridge from the magazi...

    MEU(SOC) pistol

    Marine Expeditionary Units formerly issued M1911s to Force Recon units. Hand-selected Colt M1911A1 frames were gutted, deburred, and prepared for additional use by the USMC Precision Weapon Section (PWS) at Marine Corps Base Quantico. They were then assembled with after-market grip safeties, ambidextrous thumb safeties, triggers, improved high-visibility sights, accurized barrels, grips, and improved Wilson magazines.These hand-made pistols were tuned to specifications and preferences of end...

    Civilian models

    1. Colt Commander: In 1949 Colt began production of the Colt Commander, an aluminum-framed 1911 with a 4 ¼ inch barrel and a rounded hammer. It was developed in response to an Army requirement issued in 1949, for a lighter replacement for the M1911 pistol, for issue to officers. In 1970, Colt introduced the all-steel "Colt Combat Commander", with an optional model in satin nickel. To differentiate between the two models, the aluminum-framed model was renamed the "Lightweight Commander”.[citat...

    Custom models

    Since its inception, the M1911 has lent itself to easy customization. Replacement sights, grips, and other aftermarket accessories are the most commonly offered parts. Since the 1950s and the rise of competitive pistol shooting, many companies have been offering the M1911 as a base model for major customization. These modifications can range from changing the external finish, checkering the frame, and hand fitting custom hammers, triggers, and sears. Some modifications include installing comp...

    Current users in the U.S.

    Many military and law enforcement organizations in the U.S. and other countries continue to use (often modified) M1911A1 pistols including Los Angeles Police Department SWAT and S.I.S., the FBI Hostage Rescue Team, FBI regional SWAT teams, and 1st Special Forces Operational Detachment—Delta (Delta Force). The M1911A1 is popular among the general public in the U.S. for practical and recreational purposes. The pistol is commonly used for concealed carry thanks in part to a single-stack magazine...

    International users

    1. The Brazilian company IMBEL (Indústria de Material Bélico do Brasil) still produces the pistol in several variants for civilian, military and law enforcement uses in .45 ACP, .40 S&W, .380 ACP and 9 mm calibers. IMBEL also produces for US civilian market as the supplier to Springfield Armory.[citation needed] 2. The Canadian company Seraphim Armoury brands Filipino manufactured pistols in several models for domestic and export use. Pistols are available in .45 ACP and 9 mm calibers for civ...

    Cartridge: .45 ACP
    Other cartridge chamberings include .22 Long Rifle, .38 Super, 9×19mm Parabellum, .40 S&W, 10mm Auto, .400 Corbon, .50 GI, .455 Webley, 9×23mm Winchester, .357 SIGand more. The most popular alterna...
    Barrel: 5 in (127 mm) Government, 4.25 in (108 mm) Commander, and the 3.5 in (89 mm) Officer's ACP. Some modern "carry" guns have significantly shorter barrels and frames, while others use standard...
    Rate of twist: 1:16. This means 16 inches (406 mm) of barrel traveled per rotation, or 1:35.5 calibers (.45 ACP)

    On March 18, 2011, the U.S. state of Utah—as a way of honoring M1911 designer John Browning, who was born and raised in the state—adopted the Browning M1911 as the "official firearmof Utah".

    Hogg, Ian V.; Walter, John (2004). Pistols of the World (4 ed.). David & Charles. p. 225. ISBN 978-0-87349-460-1.
    Thompson, Leroy (2004). Combat Handguns. Greenhill. ISBN 9781853675768.
    Thompson, Leroy (20 May 2011). The Colt 1911 Pistol. Weapon 9. Osprey Publishing. ISBN 9781849084338.
    Meadows, Edward S. U.S. Military Automatic Pistols: 1894–1920. Richard Ellis Publications, 1993.
    M1911 Pistols Organization main page, Detailed animated drawing of all operational parts and Syd's 1911 Notebook on M1911.org
  2. Mars - Wikipedia

    en.wikipedia.org › wiki › Mars

    The public can request images of Mars via the Mars Reconnaissance Orbiter 's HiWish program. The Mars Science Laboratory, named Curiosity, launched on 26 November 2011, and reached Mars on 6 August 2012 UTC. It is larger and more advanced than the Mars Exploration Rovers, with a movement rate up to 90 metres (300 ft) per hour.

    • 24.007 km/s, (86430 km/h; 53700 mph)
    • 686.971 d, (1.88082 yr; 668.5991 sols)
    • 1.025957 d, 24ʰ 37ᵐ 22.7ˢ
    • 0.636 (0.4–0.87) kPa, 0.00628 atm
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  4. Mars, Incorporated - Wikipedia

    en.wikipedia.org › wiki › Mars,_Incorporated

    He started the Mars Candy Factory in 1911 with Ethel V. Mars, his second wife, in Tacoma, Washington. This factory produced and sold fresh candy wholesale, [15] but ultimately the venture failed [17] [18] because there was a better established business, Brown & Haley , also operating in Tacoma. [19]

  5. Nakhla meteorite - Wikipedia

    en.wikipedia.org › wiki › Nakhla_meteorite

    From Wikipedia, the free encyclopedia SEM image of a chip of the Naklha meteorite, depicting possible biomorph material: the larger, broad knife-like features and the small, donut-shaped features Nakhla is a Martian meteorite which fell in Egypt in 1911.

  6. History of Mars observation - Wikipedia

    en.wikipedia.org › wiki › History_of_Mars_observation

    Earth-based telescopes equipped with charge-coupled devices can produce useful images of Mars, allowing for regular monitoring of the planet's weather during oppositions. [94] X-ray emission from Mars was first observed by astronomers in 2001 using the Chandra X-ray Observatory , and in 2003 it was shown to have two components.

  7. Google Images

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  8. Category:Images - Wikimedia Commons

    commons.wikimedia.org › wiki › Category:Images

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  9. 8 unexplained images sent back by the Mars Curiosity Rover ...

    www.dailydot.com › unclick › 8-unexplained-images

    Aug 11, 2015 · 8 unexplained images sent back by the Mars Curiosity Rover I want to believe. Miles Klee. Internet Culture. Published Aug 11, 2015 Updated May 28, 2021, 4:37 am CDT

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