Patently absurd. A fragment tells you nothing about who fired it.
Yes, I know, because Frazier lined up the markings in his mind when they wouldn't line up under the microscope. But great. Now all you have to do is show that bullet found on an unrelated stretcher at Parkland Hospital and the two fragments allegedly recovered from the limousine were actually involved in the assassination.
Says the guy who can't even demonstrate that this rifle was ever in the garage.
The fragments don't tell us who fired the gun but they do tell us what gun they were fired from. In this case C2766, which was ordered, paid for and possessed by Saint Oz.
Of course it's possible that the fragments weren't 'involved in the assassination' but only if you believe that fragments from a bullet fired by Saint Oz's C2766 were somehow in the limo prior to the assassination or planted there afterwards.
It's also possible that the rifle Marina photographed Saint Oz posing with and the rifle she saw blanketed in the garage wasn't C2766.
Of course, something being possible doesn't mean it's likely or even a reasonable consideration.
The fragments are very conclusive proof.
LHO: GUILTY BEYOND A REASONABLE DOUBT