03a4 barrel

[ranger]

HI All..
I need help with this one.....
A friend found himself an 03a4 barreled action this past weekend with a "Z" serial number.
The barrel has the correct date ( 9-43 ) and it is a Remington barrel, but it is 4 groove....
All my information says it should be a 2 groove.
Also " USN in small letters stamped on the underside ????????
Any info would be appreciated..
Thanks in advance...
Regards, Richard

Information

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[JGaynor]

PM sent.
Regards,

Jim

[Mike Haas]

HI All..
I need help with this one.....
A friend found himself an 03a4 barreled action this past weekend with a "Z" serial number.
The barrel has the correct date ( 9-43 ) and it is a Remington barrel, but it is 4 groove....
All my information says it should be a 2 groove.
Also " USN in small letters stamped on the underside ????????
Any info would be appreciated..
Thanks in advance...
Regards, Richard

Pictures?..This is interesting ?