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Fired 40 mm low-velocity M781 showing its orange signal chalk . 40×46 mm LV (low velocity) [2] is a NATO-standard [3] high–low grenade launcher cartridge meant for hand-held grenade launchers, such as the M79, M203, Milkor MGL, Heckler & Koch AG36 and M320 Grenade Launcher Module.
HE grenades have been considered the standard for both types of 40 mm grenades, but over the years the functions of the weapons using these grenades has dramatically expanded, and as a result the need to be able to engage larger and more armored targets. 40×46 mm types include the M397A1, M433, M463, and the newer M1060.
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.
In November, 1943 it was the first plant to package ammo in vacuum-packed metal cans. In the Spring and Summer of 1944 it was employed in inspecting and repacking .45 ACP and .30 Carbine ammunition. EW Eau Claire Ordnance Plant (August 1942 to December 1943) – Eau Claire, Wisconsin a division of US Rubber Co.
It is designed to fire 40mm telescoped ammunition. [2] This format provides significant benefit within vehicles in the space envelope required for the gun and the ammunition storage. [ 3 ] However, the selection of the unfielded, thus unproven, new design for major French and British programmes was controversial.
Though the feed strips were replaced by most militaries with machine guns using either disintegrating or non-disintegrating belts and detachable magazines, the Hotchkiss feed strip design actually pioneered an early 50-round articulated fed belt mechanism, made up of articulated pieces of metal that folded together, resembling conventional feed strips, this feed device has only been used with ...
According to the U.S. Army Field Manual FM 3-22.31 40-MM Grenade Launcher, M203, [8] there are eight different rounds for the M203: 40 mm ammunition line drawings An M16A2 rifle equipped with an M203 grenade launcher lies in the grass near some of the types of 40 mm ammunition available for use with the M203. The cartridges are, from left to ...
The 40 mm ammunition used (40×53 mm) is not interchangeable with that used in the M203 (40×46 mm). The M203 ammunition develops a lower chamber pressure, and resultant lower muzzle velocity and range, compared to ammunition loaded for the Mk 19. The Mk 19 fires from an open bolt. The rounds are mechanically fed onto the bolt face with the ...