I am a rank 2 Rogue Trader and taken exotic weapon training. I would like to take the xenos flechette blaster but its classed as a basic weapon as well can I still take it?

I am a rank 2 Rogue Trader and taken exotic weapon training. I would like to take the xenos flechette blaster but its classed as a basic weapon as well can I still take it?

Yes.

I asked this same question in this thread: http://community.fantasyflightgames.com/index.php?/topic/87963-question-about-exotic-weapon-proficiency/