Here is a picture of it apart.
View attachment 51161
Basically you have two large threaded rods that actually hold the can together and a set of 8 rods that guide the wads. All that is required for disassembly is a provided hex wrench.
The only catch is that you have to buy a rod kit for each length(6",8",and 10") which will retail for $50 (includes the 2 attaching rods and 8 guide rods.