The response trigger is a drop-in kit for the 98 Custom. The response trigger kit increases your trigger speed by resetting the trigger and sear with excess gas during firing. This gas is used to operate a cylinder behind the trigger to do the resetting. The pressure of your finger on the trigger pulls it back to fire the next shot. The speed is determined by the amount of flow through the knurled adjuster on the side. The upper limit on the rate of fire is set by this adjuster.
The Tippmann RT Trigger is newer, so it should be commonly available, both new and used.
Oh man!!!!! If you have a 98 custom or regular 98 you gotta get this!!!!! If you have to send your regular 98 in it is well worth it, tippmann does the install for nothin. All ya pay for is shipping. As soon as i got this mod installed on my custom 98, I charged it and found the sweet spot the first time!!! Hold her in the sweet spot and watch the paint fly. you can dial up the rate of fire.
Intimidates opponents, (i dont think thats bad) Uh, man there is nothing bad about this upgrade!!!!!!
If you have a 98 at all, even if you dont use it (god forbid). You have got to get this. You will never want another marker. I was amazed at the rate of fire, and no ball breaks!!!!!! I also added the double trigger which makes it even easier to find the sweet spot, and it looks cool. And it is well worth $70 - $100. It is a piece of cake to install. If you have ever taken apart the 98 you will have no problem. Once again get this and happy hunting!!!!!!! I wish i could rate this higher than a 10!!!!!!!!!!!!!!!!!!!!