Enfield P14 marking question.

[Ridolpho]

Serial number is 54188

That's pretty early. The approval date for the change was Dec. 1916 but I don't know at what serial# it occured at the 3 factories. If you peruse old threads here there may be an answer. I assume that a Mk I* bolt would not work in an unmodified Mk I receiver.

Ridolopho