All 98 Custom stocks fit BT markers. All A5 barrels fit BT markers including the Flatline. The A5 Response Trigger kit fits BT markers. BT makes a very nice E-grip for thier markers. BT makes a new electric sound activated loader called the Rip-Clip that only fits BT markers and it accepts all cyclone hoppers. With a little custom modding the cyclone will work on BT markers. BT markers have weaver/picatinny rails on top and bottom of the marker body so any accessories that will mount on weaver/picatinny rails will mount on a BT. Check out BTs Web-Site for all of thier accessories and upgrades. The internals of the BT-4 are exactly the same as the internals of the 98C so any internal upgrades for the 98C will work in BT markers. The only difference is a small hole in the right side of the power tube and valve that is there for a small locator nubb on the inside of the right side reciever half on the BT. So to use an aftermarket power tube or valve for a 98C you just grind that small nubb off the inside of the right reciever of the BT. I did this to my BT, took almost a whole minute. For more info go to BT-WARRIOR
and check out the forums.
This post has been edited by DVLCHLD: 13 October 2007 - 08:21 PM