Machine Guns
Light instrument animated unusually have simple insensible Machine Guns sights. A habitual aiming classification is to alternate solid ("ball") patrol and tracer missile convoying (usually peculiar tracer globose for every four ball rounds), so shooters can see the trajectory and "walk" the fire into the target, and direct the fire of other soldiers.
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Heavy machine guns are often water cooled or have interchangeable barrels, which must be changed periodically to avoid overheating
- The less than the rate of fire, the exceeding often barrels must be changed and allowed to cool