Have a guy passing by my way Sunday morning. He has a NPM 4,157,0XX (couldn't make out the last 2 digits from his few pictures)
I just e-mailed him to try to line up a meeting. Sounds as though he's trying to sell for a friend and will be picking it up Friday, then heading to a shoot up this way on Sunday. His friend (the owner) thinks the barrel might be a replacement since it's not a NPM barrel. I know NPM didn't make barrels.
So I've asked for the markings on the barrel in my e-mail.
If this is a dated barrel......... What date range could I expect if it's a original barrel to the receiver. In the 4 mil NPM range was there a maker or two more commonly seen in this range?

No books handy here, but can remember NPM used UEF, IBM, Marlin, RMC, and Buffalo Arms barrels.

I know these questions are a bit cloudy, but any help greatly appreciated,
Charlie-painter777
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