MARINE CORPS WEAPONS & VEHICLES
SMALL ARMS AND MACHINE GUNS
M1014 12-GAUGE JOINT SERVICE
BRIEFING: The M1014 is an ambidextrous semi-automatic 12-
gauge shotgun with a collapsible stock and MIL-STD 1913 RAS for
mounting various optical sights. The shotgun is constructed of
polymer material and corrosion-resistant metal components. The
M1014 fires 2 3/4-inch and 3-inch magnum shells, with a magazine capacity of at least six rounds, dependent on shell size.
M203A2 40MM GRENADE LAUNCHER
BRIEFING: The M203A2 is a rifled 40mm grenade launcher that
attaches to the M16A4, M4 and M4A1 rifles. The M203A2 has a maximum effective range of more than 160 yards at point targets and
more than 300 yards at area targets. The M203A2 can fire several different types of grenades, including high-explosive, smoke, illumination, tactical CS (tear gas), multi-projectile and practice ordnance.
M249 5.56MM LIGHTWEIGHT
BRIEFING: The M249 is a belt- or magazine-fed, gas-operated,
air-cooled light machine gun with a maximum effective range of
more than 1,000 yards. This weapon enhances a squad’s ability
to engage targets with a high volume of fire. The M249 is fielded
in two versions: the basic version and a “Para-LWMG” variant
that has a folding stock and a shortened barrel. The M249
recently was replaced by the M27 Infantry Automatic Rifle in
the squad automatic weapon (SAW) role.
M27 INFANTRY AUTOMATIC RIFLE (IAR)
BRIEFING: The M27 IAR is a lightweight, Marine-portable,
closed-bolt, 5.56mm weapon capable of 36 rounds per minute. The
IAR improves the squad automatic rifleman’s maneuverability and
displacement speed, while providing the ability to suppress or
destroy targets of most immediate concern to the fire team. The IAR
is lighter, more durable, accurate and reliable than the M249 SAW.
The M27 IAR is a variant of the Heckler & Koch HK416.
M240 7.62MM MACHINE GUN
BRIEFING: The M240 is a belt-fed, air-cooled, gas-operated,
general-purpose machine gun. It has multiple fielded variants to
support infantry and support operations from the ground mount
and employment from fighting vehicles, tanks, vessels and aircraft. The M240 has a maximum effective range of 1,200 yards.
M2 .50-CALIBER HEAVY-BARRELED
BRIEFING: The M2 is a belt-fed, crew-served, heavy machine gun
that has been in service since World War II. System improvements
have increased performance and accuracy. The M2 has a maximum
effective range of about 1,830 yards. The M2 is assigned to infantry
and support units, providing defense against aircraft and ground
vehicle threats, and can be employed from vehicle or ground mount.
M2A1 .50-CALIBER FIXED-HEADSPACE HEAVY-BARRELED
BRIEFING: The Marine Corps adopted the U.S. Army
Enhanced .50-caliber Machine Gun (M2A1) Capability
Production Document (CPD) on Oct. 9, 2012. The CPD establishes improved capabilities for the current M2 that include a
Quick Change Barrel (QCB) and better barrel life, a manual
safety and greater reliability. The current M2 will be modified to
M2A1 QCB with kits at the depot that will set fixed headspace
and timing, which eliminates the need for the operator to set
them after each barrel change. This will eliminate the potential
for barrel damage due to the operator improperly gauging headspace and timing, reduce the probability of weapon failure or
malfunction, and decrease the time to perform a barrel change.
The addition of a manual safety will decrease the likelihood of
unintended or collateral damage. Procurement of the modification kits began in fiscal 2013. Special gauges and tools also will
be procured to perform the modification and maintenance when
the M2A1 is placed in inventory. The modification of the M2 to
the M2A1 began fielding during 2015.
MK19 MOD 3 40MM MACHINE GUN
BRIEFING: The Mk19 is a belt-fed, crew-served, 40mm
grenade-launching machine gun. It has a maximum effective
range of more than 1,500 yards (point target) and 2,212 yards
(area target). The Mk19 has a cyclic rate of fire of 325-375
rounds per minute and can be fired manually from a vehicle or
M32A1 MULTISHOT GRENADE
BRIEFING: The M32A1 MSGL is a lightweight, 40mm,
shoulder-fired, semi-automatic, revolving-action multishot
grenade launcher. The M32 can be loaded with six 40mm
rounds and is capable of firing all Department of Defense
Identification Code 40 x 46mm low-velocity ammunition.
M32A1 MULTISHOT GRENADE LAUNCHER