The Tippmann 98 Custom is one of the most popular paintball guns ever made. The main feature is the ease of customizing the marker. In addition to all the great features of the Model 98, the 98 Custom offers the ability to accept drop-in kits for the Response Trigger, Electronic kit, Flatline Barrel System, Double Trigger kit, and Low Pressure kit. All of these kits can be installed with same tools that you use to disassemble the marker. The Tippmann 98 Custom is the most customizable marker you can buy.