They have rumored about an Alloy version of the SP-101 for a few years.
However, this appears to be some alloy or carbon steel, and
not aluminum alloy.
The new blued gun is 26 ounces, the same as a stainless one.
No rel advantage for me to buy one IF I wanted to stick with
38/357.
I'm getting away from 38/357 and have one left.
I'll be spending my $$ on a stainless SP-101 in 9mm...
as a companion to this:
Still, for someone who likes the SP1-101 and prefers a
darker revolver, then this new version might be just dandy.