Ruger Mark I, II, & III Essentials:
Ruger Mark III:
Assembly & Disassembly:
Like the Ruger Mark I and Mark II pistols, the Ruger Mark III is a pain in the ass to disassemble and reassemble. I would advise against any of these pistols and recommend the Ruger Mark IV.
Ruger Mark IV:
Where as the Ruger Mark I, II, & III pistols are a pain in the ass to disassemble and reassemble, the Mark IV is incredibly easy to take apart, clean, and put back together. If you are wanting to buy a this style of .22LR pistol, then you should hold out for the Mark IV.