Drhuner- if you call Knight Rifles they will be able to sell you a kit. You will not find a kit anywhere else. All the kit consists of is a replacement breech plug to fit the red plastic extreme discs and some of the red plastic discs and a plastic disc tool for attaching and removing the discs to the breech plug. If your T-bolt has a rounded firing pin that came standard with the T-bolt, you will need nothing else. It takes less than 5 minutes to do the conversion. I have 2 T-bolts in my collection which I have converted to use the red plastic extreme discs and am completely satisfied with the conversion. One of my T-Bolts with the conversion is used by my son and he has bagged 2 large bucks and several does with it. Hope this helps you out and good luck in the future.