Knights completely break down with two tools including the trigger assembly, breach plug and bolt assembly.
It takes less than 5 minutes to remove both assemblies and completely clean them. The Knight bolt actually requires no tool to remove or clean.

How long does it take to remove the firing pin and trigger assembly from an Encore for a thorough cleaning? How many tools does it require?

If you really want to see easy, get a NULA. Mine has zero blowby. Absolutely none and with smokeless powder it gets cleaned when i feel like it. Shoot it and give it a quick wipe down. Even the breach plug channel stays clean enough for many many shots.

Well I can drop my assembly out in about 30 seconds with one little tool. Completely disassemble the trigger assembly in about 1 and a half minutes with a small punch tool, clean it all up and put it back together in about the same amount of time. And that's with overly large sausage fingers! But most people don't break down their trigger assemblies. They spray a cleaner in and blow the assembly out then add a drop or 2 of oil. If for some reason you have found the encore trigger assembly difficult to break down, Mike has a wonderful guide up (with pictures) for doing just that :D http://www.bellmtcs.com/store/images...jobmanual2.pdf

Does anybody know where I can get a bolt assembly for a Disc Extreme?

o ring or the shims in our optima, accura and wolf make them pretty much the simplest muzzy to clean. Remove BP, hot soapy water with a brush after using the drill bit, dry it and I am finished with that part. A few patches of 2 in 1 bore scrubber and bam, its finished. I do however take my time as I prefer to treat them right and make sure its done right. If I worried about how long it took to clean a muzzy, I wouldnt be shooting one.

I know Knight sells them labeled as a "conversion" kit. You can find on ebay and such sometimes... not sure where else might have them.

I've owned a bunch of the pro hunters and encores they are much harder to clean then the new Knight ultralight for example

Numrich also sells them but i think its about the same price as Knight. http://www.gunpartscorp.com/Products/1372040.htm

And i can do the exact same thing with a Knight bolt and trigger so i fail to see how a break action is easier to clean. Ive owned both styles of MLs. Both are very simple to clean if you have the 209 tolerance (head space) set correctly. Its pretty simple to do with a Knight,,,Just use a Win209 or shim the primer pocket for the primer of your choice.

The breach will stay virtually spotless

Now with the breach, bolt and trigger out of the equation we only have a barrel/breach plug left. Never seen any difference in cleaning one barrel over another. The difference in a toolless plug vs a plug needing a socket is so small i would rather have a better designed plug like the Lehigh, Savage or Omega plug.