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The M79 was a result of the US Army's Project Niblick, an attempt to increase firepower for the infantryman by having an explosive projectile more accurate with further range than rifle grenades, but more portable than a mortar. Project Niblick created the 40 x 46 mm grenade, but was unable to create a satisfactory launcher for it that could ...
Niblick or Rut Niblick – a trouble club and pitching iron and generally the most lofted of the 19th century irons, with a very small rounded head and a loft equivalent to a modern nine iron or wedge. [5] [better source needed] The traditional set of irons was invented by Archibald Barrie, and was used from 1903 until about the 1940s.
One of the first examples of a dedicated breech-loading launcher for unitary explosive grenade rounds was the M79 grenade launcher, a result of the American Special Purpose Individual Weapon program (specifically the 40×46mm grenade round developed during Project NIBLICK, [8] applying the German-developed high–low system to produce ...
The United States's Niblick nuclear test series [1] was a group of 41 nuclear tests conducted in 1963–1964. These tests [ note 1 ] followed the Operation Roller Coaster series and preceded the Operation Whetstone series.
Older cartridges designed specifically for the M79 grenade launcher or the AN/M8 pyrotechnic pistol also remain in inventory. The XM674/M674 is a CS riot control agent cartridge. The unit contains 90-100 grams of CS mixture, with a 2-7 second ignition delay and burn time of 10 to 40 seconds. The round is effective to a distance of 65 to 90 meters.
The most well known use of the high-low system was by the U.S. Army, with the introduction of the M79 grenade launcher, shortly before the Vietnam War. The M79 fired a 40 mm shell which contained a standard fragmentation grenade with a modified fuze. The cartridge casing contains a heavy cup-shaped "high pressure chamber" in the bottom.
The M576 is a US Army designation for a 2.646 in (67.2 mm) long and 0.254 lb (0.12 kg) heavy US 40mm grenade buckshot load used in the M79, M203, M320, and M32 MGL grenade launchers. [1] It is olive drab with black markings.
The idea of a flechette-firing individual weapon started in earnest during the Army's Project SALVO.SALVO had earlier concluded that a small weapon with a high rate of fire would be considerably deadlier than the large "full power" weapons being developed in the 1950s, and followed several lines of investigation to find the best way to provide high firing rates.