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Always enjoyed collecting and restoring 1940 rifles, I have most of the dates including a undated '40 gas trap barrel too. Still missing the S-A-6-40 barrel but my old friend George Apgar has a S-A-6-40 barrel (and receiver)Attachment 53148Attachment 53149Attachment 53150Attachment 53151Attachment 53152Attachment 53153
forgot to include the S-A-11-40 barrel, used the S-A-1-41 by mistakeAttachment 53155
Robert, very impressive. Thanks for sharing with us. :)
Nice, nice, nice...
I have a 6-40 found 30+ years ago -- it's a stovepipe, but real. Those are some very scarce barrels you have!
About 14 or 15 years ago Mac sent me some of his data concerning the gas trap to gas port conversions. The very early gas port barrels were used on the gas trap conversions,
a few examples from Mac's data:
s/n 175 with S-A-6-40 bbl, s/n 188 with S-A-7-40 bbl s/n 256 with S-A-7-40 bbl s/n 756 with S-A-10-40 bbl (I saw s/n 758 once, it had a 1950 bbl) s/n 5777 with S-A-7-40 bbl,
s/n 7307 with S-A-7-40 bbl
Beside barrels for production a fair number got used-up on the gas trap conversions too
5777 no longer has a 7-40 barrel on it.
Was the S-A-7-40 barrel in s/n 5777 with a heat lot T-5-B and were the pads chromed ?
yes, that is correct.
It now has a real gas trap barrel on it.
That is interesting, where you able to find the correct early gas trap barrel with the drawing number D28286 or did you use a later gas trap barrel with the drawing number D-28286 ? Were the low guide ribs corrected ? Based on Mac's data which showed s/n 5777 with a S-A-7-40 barrel being a direct conversion and maybe being rebuilt again, I think I would have kept it with the gas port barrel