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M240 Medium Machine Gun

The M240 family of medium machine guns has long been employed by all services of the U.S. Armed Forces. It comes in several variants and mounting configurations. These configurations include a coaxial version for armored combat vehicles, a pintle-mounted version for light tactical vehicles and rotary-wing aircraft, and bipod and tripod versions for dismounted infantry units.

M240B Medium Machine Gun

M240B Medium Machine Gun

Characteristics

Dimensions
Barrel length: 551 millimeters 21.7 inches
Overall length (collapsed): 1 232 millimeters 48.5 inches
Overall height: 295 millimeters 11.6 inches
Weight
Barrel weight: 2.63 kilograms 5.8 pounds
Features
Caliber: 7.62×51 millimeter NATO
Action: Gas-operated, open bolt
Feed: Belt-fed
Rate of fire: 550-650 rounds per minute
Effective range (grazing fire): 600 meters 1 968.5 feet
Effective range (point target): 800 meters 2 625 feet
Effective range (tracer burnout): 900 meters 2 953 feet
Effective range (area target): 1 800 meters 5 900 feet
Maximum range: 3 725 meters 12 221 feet

Timeline

1977 - Date deployed

M240C  Medium Machine Gun

The difference between the M240C and the other coaxially mounted versions is that the M240C is designed for right-side ammunition feed. This configuration is used on the M2/M3 Bradley, LAV and Stryker vehicles.

Characteristics

Dimensions
Barrel length: 551 millimeters 21.7 inches
Overall length (collapsed): 1 057 millimeters 41.6 inches
Overall height: 165 millimeters 6.5 inches
Weight
Empty weight: 10.7 kilograms 22.2 pounds
Features
Caliber: 7.62×51 millimeter NATO
Action: Gas-operated, open bolt
Feed: Belt-fed
Rate of fire: 650-950 rounds per minute
Effective range (grazing fire): 600 meters 1 968.5 feet
Effective range (point target): 800 meters 2 625 feet
Effective range (tracer burnout): 900 meters 2 953 feet
Effective range (area target): 1 800 meters 5 900 feet
Maximum range: 3 725 meters 12 221 feet

Timeline

1983 - Date deployed

M240D  Medium Machine Gun

The spade-gripped M240D is the standard pintle-mounted medium machine gun for naval, vehicle and combat aircraft applications in all the branches of the U.S. military. An optional egress kit is available consisting of a buttstock, pistol grip trigger assembly and bipod to enable a vehicle’s crew to instantly convert the M240D for ground combat.

Characteristics

Dimensions
Barrel length: 551 millimeters 21.7 inches
Overall length (collapsed): 1 057 millimeters 41.6 inches
Overall height: 229 millimeters 9 inches
Weight
Empty weight: 10.39 kilograms 22.9 pounds
Features
Caliber: 7.62×51 millimeter NATO
Action: Gas-operated, open bolt
Feed: Belt-fed
Rate of fire: 650-950 rounds per minute
Effective range (grazing fire): 600 meters 1 968.5 feet
Effective range (point target): 800 meters 2 625 feet
Effective range (tracer burnout): 900 meters 2 953 feet
Effective range (area target): 1 800 meters 5 900 feet
Maximum range: 3 725 meters 12 221 feet

Timeline

2000 - Date deployed

M240G  Medium Machine Gun

M240H  Medium Machine Gun

The M240H entered service on U.S. Army helicopters. This variant is equipped with dual spade grips and thumb-activated trigger systems, and it can be quickly converted for dismounted infantry use via an egress components kit that includes a bipod and conventional pistol grip trigger module.

Characteristics

Dimensions
Barrel length: 551 millimeters 21.7 inches
Overall length (collapsed): 1 057 millimeters 41.6 inches
Overall height: 229 millimeters 9 inches
Weight
Empty weight: 11.7 kilograms 25.8 pounds
Features
Caliber: 7.62×51 millimeter NATO
Action: Gas-operated, open bolt
Feed: Belt-fed
Rate of fire: 550-650 rounds per minute
Effective range (grazing fire): 600 meters 1 968.5 feet
Effective range (point target): 800 meters 2 625 feet
Effective range (tracer burnout): 900 meters 2 953 feet
Effective range (area target): 1 800 meters 5 900 feet
Maximum range: 3 725 meters 12 221 feet

Timeline

2004 - Date deployed

M240L  Medium Machine Gun

The M240L reduces the weight of the existing M240B by 5 pounds via a titanium receiver and polymer trigger frame.

Characteristics

Dimensions
Barrel length: 551 millimeters 21.7 inches
Overall length (collapsed): 1 232 millimeters 48.5 inches
Overall height: 229 millimeters 11.6 inches
Weight
Barrel weight: 2.63 kilograms 5.8 pounds
Features
Caliber: 7.62×51 millimeter NATO
Action: Gas-operated, open bolt
Feed: Belt-fed
Rate of fire: 550-650 rounds per minute
Effective range (grazing fire): 600 meters 1 968.5 feet
Effective range (point target): 800 meters 2 625 feet
Effective range (tracer burnout): 900 meters 2 953 feet
Effective range (area target): 1 800 meters 5 900 feet
Maximum range: 3 725 meters 12 221 feet