How much does the Mk-19 gun weigh?

The Mk-19 grenade launcher weighs 75.6 pounds, making it a heavier option among similar weapon systems. This weight is significant as it impacts the transport and operational deployment of the weapon on the battlefield. The Mk-19 is designed for sustained automatic fire of 40mm grenades, and its weight allows for a stable firing platform, which is essential for accuracy and control during operation.

Within the context of the choices given, the other weights do not accurately represent the Mk-19's operational specifications. The much lighter weights suggest weapon systems that are designed for different roles or capabilities, which would not provide the same level of firepower or effectiveness as the Mk-19. Therefore, its weight reflects its robustness and the firepower it can deliver.