No4 Mk1/3 Origination and bolt head track

[Alan de Enfield]

[quote=Surpmil;453052]

It would be interesting to know at whose instigation or instruction it came to be introduced.

I'm sure I have read that it was from a suggestion by Savage as a way of simplifying / speeding up production.
However without official 'records' it could just be 'internet theory'.