That wasn’t my point, and I didn’t judge either way on the effects of a plea bargain. The OP I was responding to was specifically saying the production of a weapon in the course of a plea bargain was unimportant. I disagree with that. ETA: MOO
I'm sorry if I misunderstood you and particularly if I misrepresented your point.
I thought you were saying that his giving up the weapon is the only way to know for sure that BK is guilty. I think the victims' loved ones--and we the public--will be satisfied with a conviction.
Only time will tell for sure.