Barrel comes off relatively easily, mine was friction fitted so I put a long screw driver down the shotgun barrel and gently tapped the screwdriver with hammer over a bed or carpet so as to not damage it. Next part is where I lost a piece, beneath the cylinder along the rod that inserts into it there is a button and possibly a spring, not sure because the pieces flew out when I was taking it apart. I was able to recover the button and just jammed wads of paper untill the button was tight again. In any event its the piece that gives friction to the cylinder so it doesn't spin freely. Both the grips come off, the muzzle loader is held on by a screw, and the hook that holds it at the end can also be removed if you want, mine came off by accident. The internals can be taken out and there are three pieces and two springs inside; the hammer, the trigger and this piece that rotates the cylinder. I would take pictures once you get cover off so you can see how it all goes back together. The two springs are a bit difficult to get back to where they need to be when it is time to reassemble, the smaller spring is very easy to lose, and is by far the harder to reset. The trigger guard does not come off, and is part of the cast. Hope this helps