I also found an answer for this:

Originally Posted by eightbore
Was your A-1 case colored at the factory?

[Linked Image from i.postimg.cc]

So the gun is a B25A2.

It does appear to have a Superlight forearm:

[Linked Image from i.postimg.cc]

[Linked Image from i.postimg.cc]

[Linked Image from i.postimg.cc]

...but Superlights are only supposed to have 26 1/2" barrels...