What weapon system is known for providing heavy fire support for infantry squads?

The M240B machine gun is recognized for its capability to deliver sustained and effective fire support for infantry squads. Its design allows for a high rate of fire, typically around 650 to 950 rounds per minute, and it can be mounted on vehicles or operated from a bipod or tripod, enhancing its versatility on the battlefield.

The M240B utilizes 7.62mm NATO ammunition, which provides greater stopping power compared to lighter calibers, making it suitable for engaging enemy personnel and light vehicles at a range. Its ability to fire in continuous bursts enables infantry squads to suppress enemy positions, providing critical support during engagements.

The other options, while useful in their own right, do not match the heavy fire support capability of the M240B. The MK19 grenade launcher offers explosive firepower but is typically more effective in suppressive roles and against fortifications rather than as a general infantry fire support weapon. The light machine gun functions well for providing higher volume fire than individual rifles but lacks the sustained fire capability and caliber advantages offered by the M240B. The M16 rifle is essentially an individual weapon, primarily designed for engagement at shorter ranges, and is not intended to provide the volume of fire necessary for heavy support in the same manner