As I stated. It showed signs of being used. It could have been fitted to the Anschutz or the Brno. I do not believe that AP a regular and experienced shooter would remove the bolt. If you read about this in 'Gun Magazines' it is bad practice to do this. You might go out shooting and forget to take it if it is not on the rifle and unless you have a special fitting for it could be damaged. It is a precision machined piece of the rifle
So it could have been used and got some paint on it. The Hair was on the 'Doppelganger' created by SBJ and the family. You also claim that the blood found internally was 'faked' by the FSS.
No. There was 1 silencer SBJ/1 with blood, hair, paint and scratches on.
And the blood inside wasn't 'faked' as such. The lab just generated a set of test results to get the case to trial.
The blood, hair, paint and scratches on the outside would easily have been batted away by the defence. The outside only becomes compelling when put alongside the inside!