It does have an NSN number, for whatever that means. I have used the bore solvent and it works very good. An overnight soak yielded bluish patches, and an inspection via a Lyman Bore camera revealed copper removal as advertised. I dont generally do that, but wanted to test it out.
I have used G96 clp in the past, just to see how my guns reacted to it. I found no reason not to use the G96 over others. It performed like it should. I do not have any right now, but would not hesitate to use G96. That said, I see no advantages of it over other either.