Impulses had a similar appearance to the Shocker Sport, however they were internally quite different; Impulses were based on the common "stacked-tube" hammer/valve layout (two bore design, bolt on top with the hammer on bottom). In contrast to the Shocker Sport, Impulses were capable of faster fire rates, were more lightweight, were cheaper, and also experienced greater tank efficiency. As a result, the gaining popularity of this product over the Shocker was foreseeable. Impulses were one of many stacked-tube electronic markers developed around the same time by opposing companies. Markers such as this were considered to be the top-end by many players (typically those involved with tournaments), and as a result the cost for upgraded versions was quite high ($1000+).