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How things work

How Hop units work

How Hop units work Hop-up generally speaking applies backspin to bb's to increase their range by reducing the air pressure on the bb's top side causing the plastic pellet to fall less over a given distance than it would without the spin applied, extending the effective range without increasing velocity. In Airsoft guns, this is usually implemented by a projection called bucking. The bucking momentarily disturbs the flight of the top side of the bb causing that all important backspin,...