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    Legacy Member phh's Avatar
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    M1903 barrel change/rear sight base

    Hello everybody my name is Paul, I live in Franceicon and I'm fond of Us Firearms.

    I just bought a M1903 built in 1942. The barrel is definitely dead. So I have to change it and I have a few questions about that, in particular about the rear sight base. I purchased a brand new criterion 4 grooves barrel.

    In my readings I understood that :

    1) The rear sight base is maintained by two pins. One is perpendicular to the barrel preventing the base to go forward and back, and the other is parallel to the barrel preventing the base to turn.

    2) I first have to unscrew and remove the old barrel with the rear sight base on it and then I can remove (try to remove) the base from the old barrel.

    My problems and questions :

    1) Is the barrel very hard to unscrew ? I remember of a P17 barrel in which I had to make a relief cut but on this M1903 it's impossible because of the rear sight base.

    2) For the moment I can't locate the first pin. I've got an idea where it is but it's just an idea... Am I right ?



    3) Any tip to remove the base ? Forward ? backward ? Heating ? I must save it because it will be very hard to find another one.

    Thanks in advance for your answers.
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    Last edited by phh; 02-08-2020 at 12:34 PM.

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