BSA Centenary 1 of 1000 1982 accessories.

Looking to hunt down info or items that came with the 1982 BSA Centenary 1 of 1000
I would like to find a sling, pistol grip cap, scope & scope mounts. I know the scope was a 4 x 40 but I don't know what mounts were used or who made them.

Any information greatfully recieved,

Pete.