a1 this was an original DISC rifle but it did not have the very first series of trigger they used. When the DISC first came out they used the same trigger that they were using in the older plunger guns. but some where along the line they switched to the normal Knight trigger that we now expect. So no I did not have to swap out triggers.

The bolt housing I am using is a Mountaineer bolt housing from one of my Mountaineers and the Breech plug is a Lehigh breech plug with removable vent liner. And I actually put an old bolt housing in the Mountaineer because I prefer just dropping the primer in the bolt versus placing it in the rails of the bolt face.

Hope some of this helps make some sense..

mike