Not really Steve,but they wouldn't have been needed in the dark when JB heard rabbits. It's removed with a special screwdriver isn't it ? And fiddly too if you don't know how.
That's true but you don't start messing with the sights if you've made a split-second decision to chase rabbits. It suggests to me that even at that stage incredibly Jeremy had still yet to make up his mind on the massacre, the "
it's now or never" remark to Julie during that first telephone call tending to confirm this. The tragedy is that it almost was "
never", but I think the chance programme on miscarriages tipped the balance of his mind and he was determined to reserve the most vitriol for June, whom he blamed for causing his and Suzette's shared heartbreak.
It's possible that Jeremy took the murder weapon home to dismantle, this being the cause of Nevill's anger when Barbara rang, as he looked around for the missing gun. It's possible that Jeremy kept the silencer on (remember his lies that first morning about it not fitting into the gun cupboard with silencer attached, suggesting he had a guilty conscience over something to hide) and cleaned it with a tampon cut in two, before replacing it in the gun cupboard lest Anthony Pargeter reported it missing.