Heavy machine guns are powerful firearms designed to provide sustained fire in military operations. They typically use larger caliber ammunition than standard machine guns, allowing them to penetrate armor and deliver significant firepower. These weapons are often mounted on vehicles, aircraft, or tripods for stability and accuracy. Commonly used in warfare, heavy machine guns can fire hundreds of rounds per minute, making them effective for suppressing enemy forces. They are usually operated by a crew and require careful handling due to their weight and recoil. Examples include the M2 Browning and DShK, which have been used in various conflicts worldwide.