Originally Posted by Gm54-120

On a DISC, Extreme, Elite, Mountaineer, Ulite ect ect the seer only holds back the firing pin assembly. More or less just like a centerfire bolt assembly. The knob if tightened also only holds back the firing pin. On a Knight plunger gun (MKs, LKs, Wolverine, Bighorn ect), both hold back the entire plunger assembly.

A DISC type bolt is taken apart without tools by tightening the "knob" until the firing assembly can rotate. Its quite simple once you see how it works. You can clean the inside of the bolt with a brush that fits and some patches. It stays pretty clean inside if you have a good primer seal so clean up is very easy. Much cleaner than the plunger guns

This video should give you a better idea of how it comes apart and how it works. Original DISC and maybe some very early Extremes were slightly different and needed a little c shaped tool but its virtually the same.
https://www.youtube.com/watch?v=xjSXPbOAoVs
https://www.youtube.com/watch?v=9ohKnPL6GQ4