I'll drop a turd in the punchbowl(even after admitting to be a BCM whore earlier in the thread), I'm disappointed with the BCM stock - doesn't allow for different QD orientations. Will probably offer it up in the classifieds shortly.
For QD I use the end plate as an attachment point not the stock. The stock is a moving target whereas the end plate will never move. $0.02 (I hate their stocks too)