Raufoss Mk 211

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.

[6] However, due to the complex structure of the projectile and consequently high costs (ca US$75 per round), the popularity is restricted to special mission profiles.

The two or three letter prefix (HXP, WCC, LC or FN) designates the place of assembly; the two-digit suffix numbers specify the production year.

The International Committee of the Red Cross has sought to have the ammunition banned, due to concern over the incendiary and explosive components and their effect on personnel.

Under the Saint Petersburg Declaration of 1868 the "military or naval" use of explosive or incendiary projectiles with a mass of under 400 grams is forbidden.

However, the Hague Conventions of 1899 and 1907 – which superseded the St. Petersburg Declaration, and were signed by a far wider circle of nations – do permit the use of such ammunition for autocannon and heavy machine guns.

[9] If detonated, the round will have a significant fragmentation and incendiary effect in a 30-degree cone behind the struck target, and this might affect others standing in the vicinity.

The Raufoss Mk.211 projectile
Mk 211 Mod 0, with green over white painted tip. The round pictured is made by the WCC in the US with a projectile probably produced by Nammo of Norway.
Loaded magazine for an M-107 sniper/anti-materiel rifle