The U.S. Army first began fielding the M320 in 2009 and later upgraded to the M320A1, which is designed to be mounted under the M4 carbine.
Grenadiers load and unload the M320A1 from the side of the weapon rather than from underneath it, compared to the M203A2, a‘major advantage because the breach of the weapon is clearly visible and the shooter can more easily load while in the prone,’ said Capt. Nick Berger, MCSC project officer for the M320A1.
‘Additionally, if the Marine experiences a misfire and the round must be removed from the barrel, it is safer to have the barrel release from the side and retain the ammunition than to have it release and potentially fall to the ground.’
A soldier armed with a grenade launcher; used to be soldier particularly selected and trained to hurl grenades.
The explosive or propulsive charge fail to ignite.
The battalions have reported a large number misfires with the new ammunition.