I have read the reference article regarding the Mk1 rifles from 0L and 1L series.

https://www.milsurps.com/content.php...g-Branch-Rifle

One paragraph raises my question:

Other bits that were slowly changed as production went along was the early style button cocking piece, the singer style rear sight, the notched front hand guard for the band hinge, and the low walled forend cut out for a magazine cut off. Later on in Mk I* production the hand guard bands were no longer milled and further in production the trigger guard was assembled out of stamped pieces and the rear sight was changed from the "L" flip type to the Canadianicon CMk 3 and CMk 4 style.

So, based on this, could a 1L46XX rifle conceivably have a square cocking piece, Mk3 rear sight, plain upper hand guard and no mag cut off cut out in the fore-end?

OR, are these parts likely to be replacements? I can't get photos yet, but they will follow when the rifle arrives.
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