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 and Mark IV Tactical:
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.
Ruger Mark III magazines will not work in the Mark IV. The base plate on the Mark III magazines will not work with the Mark IV’s grips. There may be a way to change out the base plate on the Mark III magazines