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240 (CCXL na numeração romana) foi um ano bissexto do século III do Calendário Juliano, da Era de Cristo, teve início a uma quarta-feira e terminou a uma quinta-feira, as suas letras dominicais foram E e D (53 semanas). A Era de Cristo e o modelo da semana pelas Letras dominicais ainda não estava em vigor nesta altura.
Year 240 was a leap year starting on Wednesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Sabinus and Venustus (or, less frequently, year 993 Ab urbe condita).
240 (two hundred [and] forty) is the natural number following 239 and preceding 241. Mathematics. 240 is a pronic number, since it can be expressed as the product of two consecutive integers, 15 and 16. It is a semiperfect number, equal to the concatenation of two of its proper divisors (24 and 40).
- two hundred forty
- ΣΜ´
- 2⁴ × 3 × 5
- 240th, (two hundred fortieth)
- History
- Design Details
- Variants
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Development
Manufactured by the American division of the Belgian company Fabrique Nationale d'Herstal, the FN MAG was chosen by the U.S. military for different roles after large worldwide searches and competitions. The MAG is a belt-fed, gas-operated, air-cooled, crew-served, general-purpose machine gun. Its versatility is demonstrated by its ability to be fired effectively from its integral bipod, mounted on a tripod, on ground vehicles, watercraft and aircraft.[citation needed] It was first adopted by...
Testing and adoption
The U.S. adoption of the MAG has its origins in the late 1960s and early 1970s as a project to procure a new coaxially mounted 7.62 mm machine gun for tanks to replace the M73 and M219 machine guns then being used. The 1950s-era M73 had been rather troubled, and the derivative M73E1/M219 was not much of an improvement.A number of designs of the period from various countries were considered; the final two candidates were the M60E2 and the FN MAG, which underwent comprehensive testing alongside...
The weapon fires from the open bolt position, meaning that the bolt is held to the rear and only moves forward as it is firing a round. The firing pin is static and the bolt moves around the firing pin, circumventing any need for a hammer. A sear is used to time the internal mechanisms of the weapon to provide a consistent rate of fire, ensuring pr...
FN Herstal first introduced the MAG general-purpose machinegun in the early 1950s. The M240 is the US military's adoption of the FN MAG. Parts compatibly of other MAG variants adopted by other NATO members are interchangeable.This has significant advantages in training, logistics support, tactical versatility, and joint operations.
McNab, Chris (2018). The FN MAG Machine Gun: M240, L7, and other variants. Weapon 63. Osprey Publishing. ISBN 9781472819673.Neville, Leigh (2018). Technicals: Non-Standard Tactical Vehicles from the Great Toyota War to Modern Special Forces. New Vanguard 257. Oxford, UK: Osprey Publishing. ISBN 978-1472822512.Official list of FN Military Machine Guns Archived 2017-06-06 at the Wayback Machine- 1977–present
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IBM ThinkPad 240 is an ultra-portable laptop computer designed and produced by IBM from June 1999 to 2001. It is one of the few ThinkPad 200 series models made available in America and was the smallest and lightest ThinkPad model produced to date.
The Leica M (Typ 240) is a full-frame digital rangefinder camera of Leica Camera AG. It was introduced in September 2012, and is the successor to the Leica M9 range of cameras. The M uses a 24-megapixel image sensor.
