What happened to P14 rifles made in US for Britain?

[WarPig1976]

they were likely from the Baldwin works in Chester,

This is a misconception. Baldwin didn't build rifles. Remington Arms of Delaware did at it's Eddystone PA plant which was built by Baldwin on Baldwin property through a corporate deal. The buildings where built in such a way that after rifle production ceased the buildings could be turned over to Baldwin for the production of Locomotives. A few still stand today.
Sorry to get nit picky..