I have a spare "super duty" M16 BCG from Denny's after a friend flaked out from a build. It's brand new, never been used. Only thing it's seen is lube. Never even installed into an upper. I don't have any pics on hand, but the bolt is in absolutely pristine condition: not even brass flakes on the bolt face. I was told these were build with MPI tested bolts (not marked though), and Young's Manufacturing M16 bolt carriers.
I'm looking for $185 shipped via Paypal or MO, add 3% if by Paypal.