Which barrel profile is 100% correct for a block II non-fsp clone?

What I've read so far is that a Govt. profile barrel is correct, and that SOCOM profile is grey area. CD mentioned in the ARFCOM block II thread that he's only ever seen 1 non-fsp with a SOCOM profile, and that was back in 2018 - so I'm not sure if that changed after that time.
I know that SOCOM profile is clone correct for FSP, just need clarity on Non-FSP.