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Thread: SC 1903A3 Rebuild Barrel Markings O.B.S.3

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    Legacy Member Winch61's Avatar
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    SC 1903A3 Rebuild Barrel Markings O.B.S.3

    I have searched a bit and found no like rebuild codes I found while cleaning my new acquisition SC 1903A serial #3622813. I place this receiver in Jan 1943 with with a barrel date of 3-43 so the barrel and receiver seem likely original to me. Thinking the three month window was relevent? Anyway, the barrel under the hand guard reads RBLT O.B.S.3 1.3.1945. I can't seem to find O.B.S.3 in any of the arsenal code charts I can find online. Also seems odd an A3 would be rebuilt only two years after being built and likely retain the original barrel and from what I can tell the original stock as it's a SC stock. Any help identifying O.B.S.3? Probably simple and I am just missing it.

    Thanks
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    Contributing Member rcathey's Avatar
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    Ok, so, that’s cool. I’m going to have to give my A3 a look over.
    Very interested in what the experts have to say!

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    Legacy Member RCS's Avatar
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    More common to find with M1icon rifles, thought someone had a list of the rebuild codes ?

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    Thread Starter
    Here are some for M1icon that I found and others for 1903, but still no match or even partial match.


    M1
    AAA,AN,A4 - Anniston Army Depot
    AA - Augusta Arsenal
    AHA - USMC Arsenal
    BA - Benecia Arsenal
    LE - Letterkenny Ordnance Depot (orange triangle on pistol grip) or LEAD
    OG - Ogden Arsenal
    MR - Mt. Rainier Ordnance Depot
    RA - Raritan Arsenal
    RR - Red River Arsenal
    RIA - Rock Island Arsenal
    RRA - Red River Arsenal
    SAA - San Antonio Arsenal
    SA - Springfield Armory
    Std Prod - Standard Products
    TE - Tooele Ordnance Depot

    1903 - See attached
    Last edited by Winch61; 03-08-2018 at 11:22 PM.

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    Legacy Member Winch61's Avatar
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    Further research finds that OBS 3, stands for Ordinance Base Section 3, Brisbane Australiaicon. I was told this rifle was a bring back, unlikely right, but the mans father was a B-25 navigator in WWII. I have emailed him to find out if he was in the Asian theater. Would seem more likely this could be a bring back if he was in the Asian theater and a Navigator who would not have been issued a M1icon? Regardless, a fun research project. Don't think this one will get "put back" to full SC status. Very cool that the exact location of this rifle during the war can be pin pointed. Does a rebuild on a 2yo rifle mean it was actually used or just abused? Cool stuff!
    Last edited by Winch61; 03-08-2018 at 11:51 PM.

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    I've also seen "PBS" - which I've been told is "Peninsular Base Section, which translates as Italyicon.
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    Legacy Member Winch61's Avatar
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    After contacted the man who inherited the rifle from his father, I find that his father was stationed in New Guinea and the Philippines during the war. The timeline and location makes sense given the location of B25's in both locations during the later days of the war. Still digging.

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    Exclamation Actually...IMO

    Quote Originally Posted by Winch61 View Post
    After contacted the man who inherited the rifle from his father, I find that his father was stationed in New Guinea and the Philippines during the war. The timeline and location makes sense given the location of B25's in both locations during the later days of the war. Still digging.
    B-25's were used in those areas late '42' onward until Wars end and it wouldn't shock me that a B-25 crewman would be issued/obtain a 1903-A3.

    Rob

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    Good start! The way organized research works - and in contrast to wishful thinking - is to establish a known, then work towards the lesser known. It's like moving through a new house at night with the lights off - grab that doorknob (the known), then ease your way down the hall. Fewer wrong turns or stubbed toes that way.

    My next step would be to find the organization chart for OBS 3. Try AFHRA at Maxwell AFB and/or NARA. The former has often responded quick like a bunny to my requests for basic info like this. The reason for getting the org chart is that you have no idea whether ground forces and air force ordnance units served together at OBS 3. The goal here would be to understand the possibilities of where your rifle served before rebuild (you'll never know for sure, of course). Again, go from known (OBS 3) to lesser known - how many and what types of ordnance maintenance units are under consideration. If it turns out the number of candidates is manageable, then you can pursue operations reports for those units to get an idea of what type of work they were performing. Reports of this type vary widely in detail - apparently there was no standard - but the good ones often contain lists of types and quantities of items worked on.

    I have a 1944 T/O&E for a medium bombardment squadron. All aircrew were authorized pistols; all ground crew were authorized carbines. That's the rulebook, but early unavailability of carbines would have made '03s the substitute. Anecdotally there are Missing Aircrew Reports from CBI that list '03 serial numbers, so flying with '03s is not unheard of. Of course, a handful of anecdotes tells us nothing about how frequently something like that happened. Hypothetically, if you told me you had learned that this rifle was turned in when carbines became available, I would not object. This scenario too could be researched, but it might take a long time and lots of $. First things first. Good luck. Keep at it.

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    Old thread but some added details. This is the third one I know of, all done in 1945.

    As it makes no sense they would be rebuild 1903A3 (let alone they wern't used enough to wear out) as well as the one I owned was pristine, I believe OBS3 was rebuilding them to send back with GI to the states.

    Who knows if they were selling them and or by using up spare parts.

    Is the barrel SC as well as the receiver? Two others were R receivers with SC barrels. Mine had 1 MW and TE.

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