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A large‑caliber, vehicle‑ or emplacement‑mounted directed‑energy weapon designed for sustained anti‑materiel and anti‑personnel fire. Particle beam heavy machine guns deliver continuous or high‑pulse‑rate beams of charged particles with enough energy to cut through armored vehicles, destroy incoming missiles, and devastate fortified positions. They require dedicated power plants, advanced cooling systems (often liquid‑cooled), and heavy stabilization. In naval or ground‑based air defense configurations, they can engage multiple targets in rapid succession, using pulse trains to defeat swarms. The development of such weapons is often cited as the ultimate goal of directed‑energy research: a true replacement for the .50 caliber machine gun, with greater range, no ammunition, and instantaneous effect.
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