It's been said before, but I'll add my $0.02 worth.
What you learn in BMQ is not much, weapon familiarization is the best that could be said for it. Yes, you will shoot the PWT1, but all that really does is exactly what I said earlier, familiarize you with the weapon.
48Highlander, you mention optical sights - however BMQ C7's are not issued with the Elcan optic, they'll be using regular iron sights. I doubt they'll be issued the new bayonets as well, nor the current lbv's.
What you can expect for the "hands-on test" is just a simple dry weapons handling run-through. You'll enter a room, with an evaluator who is present - some verbal instructions will follow. You will be expected to perform individual safety precautions, load, unload, make-safe, a couple of stoppages, and thats it. One of the easiest PO checks in all of basic, if you can even consider any of the PO checks difficult.
Best of luck to yeah.