Could that report have been dated 1942 Peter? Or could 6000 have been only the scopes that had been contracted for? We see no dates on No32 earlier than 1941, as you have told us in the past, and the trials for the No4(T) presumably occurred in 1940 or 41, so it doesn't seem to quite fit that 6000 scopes would be on hand at that time.
Or is it that we have the dates for the conversion of the No4 trials rifles to No4(T) spec at RSAF Enfield wrong, and it actually took place in 1942, not 1941/early42?
Skennertonsays the first were set up in May 1940 and that the first ones entered service in late 1941 or early 1942. My copy of Reynolds is AWOL, but I believe he says they entered service in 1941 as well. (Based on what information I do not know of course)