The other new-to-2003 Smart Parts marker was called the Nerve. It has since been discontinued. Nerves are a next-generation Impulse design, featuring a smaller and lighter profile, improved internals, upgraded and streamlined components from the factory, and a sleeker external look. It shares many parts that are interchangeable with the shocker, however it uses a different platform for operation. When Nerves were first released (several months late due to manufacturing and development issues), it was designed to be Smart Parts flagship "no upgrades needed" marker. It came packed with Smart Parts best accessories. The high-end features resulted in the MSRP costing $1200 for the base model, or $1500 for the upgraded package with HPA tank included. The reasoning for this was based on the previous customized Impulse markers, which retailed for $1000+, however the Nerve's high price tag didn't fare as well with the public. This was partially because public trends were already shifting away from the stacked-tube hammer/valve markers which the Nerve was based from, and toward more advanced designs such as the Shocker, Dye Matrix line, and others (this trend proceeded through 2004). To combat this, Nerve price was dropped a few months later to $1000, then again to $850. At this point Nerves were finally gaining popularity as originally expected, however one final blow was dealt to the Nerve which would put it away - the release of the Ion (below). In late 2005 SP produced an additional large batch of Nerve parts, however after this the line was halted and the marker was unofficially discontinued in light of other products.