Yes I unlocked them too.
As for the revolver I chose the left one so therefore you cant choose the unloaded gun? only the one with a bullet in!?
No you can't get dog tags in mgs3 in the euro version (so I think
), cus when you kick the shit out of the boss her dog tag would of dropped like when you fought liquid snake in twin snakes on top of the rex his dog tag dropped.
Plus when I held someone up they never dopped tags, oh well.
EDIT - some s.p.o.i.l.e.r.s in there people.