Ruger manufactured 22/45 Mark III magazine.
NOTE: This electroless nickel steel magazine will ONLY fit the 22/45
model (the model with the synthetic grip frame) of
the Mark III. If you have the model of the Mark III with a
metal grip frame
you need the
M10MKIII Ruger Mark III magazine.
has advised us that these magazines will not work in the Ruger Mark I, Mark II, Mark III,
or Ruger 22/45 Mark II or Mark IV pistols.