It is still possible to confirm that the silencer which has been used to help convict Jeremy, was fitted to the barrel of this .22 air rifle, since vital DNA evidence belonging to Sheila could still be found on the external thread on the end of the guns barrel, on the part which screws to the inverted thread inside the silencer. If, for example, the .22 air rifle was seized and examined for DNA and some of Sheila's DNA was found on the external thread of its barrel that matched the DNA of Sheila, it would be a perfect match and help link the blood contaminated silencer to the .22 air rifle, and help to confirm that the non fatal wound was inflicted to the side of Sheila's neck by use of the .22 air rifle, not the .22 semi-automatic rifle?