As far as I can tell, the sight change was the only significant change in 38-2s.

They also changed to Uncle Mike's grips.

A LGS had, a couple years ago, a 38-3 for sale.

That one had the MIM parts, used the extended J frame, and was p+ rated.

At least, that was what the catalog says.

But the one in the LGS did not say 38+P.

I didn't buy it. I might have, if I was sure it was +P rated as I don't like the locks on defense guns so a modern 638 wasn't attractive.

I now I have 49-0, and being all steel, I don't worry about using +p in it.

But it's heavy.