We need to find out about the disposal system for each country that had the Enfield Rifleand how they handled surplus weapons and how they disposed of surplus material i.e. scrap weapons and parts to get your answer.
“ZF” would never be left on an Enfield rifle that went through an FTR or any parts stored as serviceable
Right now Gibbs rifle and Aim surplus are selling 03-A4 Springfield 30-06 sniper rifles made from surplus re-welded DP rifle receivers.
J.J. Co bought all remaining stockpiles of AustralianEnfield’s along with leftover component parts, so surplus dealers can do anything they wish.