Hi Ged ,
for what it's worth I think it is a sad state of affairs when a working gun is worth more in pieces and dismantled for cash. Fair enough if its broken/ damaged beyond repair/ unusable or just plain cr@p. I suppose though when people are struggling to sell complete rifles even at give away prices, breaking for parts is the way to go.
Has anyone got a spare rearsight for a BSA Improved model D? Will swap for an MK2 Airsporter