The extended pin will be too long unless you install a backstrap.
In my experience with Glock, if you just email them and ask for the pin they will
send you one for free.
If the recall has not been done, Ruger will send you a box to ship it back to them,
and you will receive a free magazine for your trouble.
If it was produced after July 1 I believe they came with the safety updated.
They assigned those with a special serial # to differentiate them from...
It's far from a collector's item. It is commonly referred to as a transition model.
The earlier dash 4's came both pinned and recessed, as did their predecessors.
Transitioning to the dash 5 version the later dash 4's were sometimes not p&r,
and sometimes just one or the other.
Dash 5 had...