SMLE found by an author researching the fighting and retreat to Dunkirk

[5thBatt]

The MkIII with cutoff was produced by BSA up to & including 1941, it was in 1940 the cutoff became obsolete, you have to remember the MkV, No1 MkVI & the trials No4 were all fitted with cutoffs.
Pretty much the introduction of the No4 Mk1 meant the end of the cutoff, piling swivel & the butt disc.