Firing Pin N-S or S-N

[painter777]

Looking at a GB auction.
I'm in need of a Stan Pro FP.
My books, CCNL's and quick search doesn't return results.

Did see a S-N or N-S Type I come out of a US&S NPM, thought to be a original carbine.

EDIT: Top Picture is a Type II: Anyone have any info on these ?



EDIT: Bottom: Another marked different, That I believe is a Type I -

Information

Warning: This is a relatively older thread This discussion is older than 360 days. Some information contained in it may no longer be current.