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
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 M27 IAR
is lighter, and 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 MACHINE GUN
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), improved barrel life, a manual
safety and better 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
headspace and timing 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 will begin during late fiscal 2014 with fielding estimated to begin 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 ground mount.
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