Numbers Under Rear Sight

[Durango56]

Any info on numbers stamped in rear sight well on reciever of M1 Garand

Information

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[RCS]

very uncommon to find but others have reported receivers with these numbers too -

[Bob Seijas]

Tony Pucci wrote them up in the GCA Journal... they match the receiver heat lot. No idea why they did it, but it's uncommon.

[browningautorifle]

Do we have any documentary pics?

[EdG]

Years ago, Tony Pucci pointed out this oddity of the heat lot being also under the rear sight cover.

Since August 2012, I have seen and noted 11 such receivers.
One in June 1942, five in August 1942, four in September 1942, and one in October 1942.

So far, all the heat lot marks are read looking back from the front of the receiver not forward from the heel.
Some of the heat lots under the rear sight cover are complete, some are missing the first letter, and some are missing the last letter or number. Otherwise, they do match the receiver heat lot seen on the right side of the receiver above the drawing and revision number.

All are - 17 revision receivers. but the heat lots themselves are different.
During the - 14 revision the SA was dropped. During the 17 revision the - (dash) was dropped.


I have seen a few receivers with a partial or complete heat lot stamped on the rail for the op rod. One such receiver is 331965, September 1941. Maybe these receivers mistakenly had the heat lot stamped too high then reapplied in the correct place on the receiver.
Surely, the heat lots under the rear sight cover would not have been mistakenly placed there.

[Durango56]

Thanks for the info!

[Durango56]

Anyone know which GCA journal issue the article is in?