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The Raufoss Mk 211 is a .50 BMG (12.7×99mm NATO) multi-purpose anti-material high-explosive incendiary/armor-piercing ammunition projectile produced by Nammo under the model name NM140 MP. [1] It is commonly referred to as multipurpose or Raufoss , meaning red waterfall in Norwegian.
Raufoss Mk 211. High-explosive incendiary/armor-piercing ammunition (HEIAP) is a form of shell which combines armor-piercing capability and a high-explosive effect. In this respect it is a modern version of an armor-piercing shell. The ammunition may also be called semi-armor-piercing high-explosive incendiary (SAPHEI). [1]
Raufoss Ammunisjonsfabrikker was a Norwegian company based at Raufoss, established in 1896 as Rødfoss Patronfabrik. Initially the company manufactured ammunition, and later also other products, such as aluminium parts to the automotive industry. Until 1948 the company was a subordinate to the Norwegian Ministry of Defence.
The "Mk 211" name comes from the nomenclature "Mk 211 Mod 0" used by the U.S. military for this round. [ 3 ] [ 4 ] The multipurpose name is based on the projectile having an armor-piercing ( tungsten core), an explosive , and an incendiary component, thus making it capable of penetrating lightly armored targets and causing damage to personnel ...
A mine shell (from German: Minengeschoss, "mine shot") or high-explosive, high-capacity (HEHC) [a] in British military nomenclature, [1] [2] [3] is a military explosive shell type characterized by thin (usually steel) shell walls and a correspondingly high quantity of explosives, much higher than the traditional high-explosive shell type per caliber, meaning that mine shells trade ...
] Nammo has operations in ten places in the US (Nammo Defense Systems Inc.) and is the only licensed manufacturer of the M72 LAW, with production lines in Raufoss and Mesa, Arizona. In addition to the M72, Mesa also manufactures the M141 Bunker Defeat Munition for the United States Army , while Nammo's facilities in Columbus, Mississippi ...
The Raufoss .50 round itself is easily identified by its sea-green colored bullet tip over a underlying tip color of white/silver. The headstamp on the casing can also help to identify the round as Raufoss and some common headstamps include: HXP89, WCC94 & FN91; or HXP, WCC or FN with different 2-digit numbers as production year suffixes.
Explosion of the mine under Hawthorn Ridge Redoubt, 1 July 1916. On the morning of 1 July 1916, a series of 19 mines of varying sizes was blown to start the Battle of the Somme. The explosions constituted what was then the loudest human-made sound in history, and could be heard in London.