P L stamped in barrel loop

I have a Mk3 parts kit that has the letters P L stamped on top of the barrel loop.
What do they stand for or indicate? It was a 1948 Enfield.

Peter Laidler......😉

That would be awesome.

Good one Brit Plumber!! Lol

Here is a photo of the stamp. The P is lightly double stamped. It is a P and not a R.

Definitely not me!!!!!