If a No4T came through our workshops without the T mark, then the IN examiner would simply mark his inspection sheet 'mark with T designator' and the Armourer with the job would simply stamp it according to the EMER which states '........in accordance with its telescope status' or something like that.

I have to say that we didn't mark the bracket with the rifle number as a matter of course because you had to remove the bracket to do it. If a bracket was being changed or re-fitted (forger getting off early on that day.....) then you'd number or re-number it