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Trigger Assembly
Trigger housing stamped with diagram number:
D28290-12-SA
Springfield Armory manufacture.
Approximate serial number range:
1,010,001 - 3,300,000
Manufacturing date range:
December 1942 through December 1944
Trigger guard is Type 1 (milled). Specifically Type 1G — no diagram marking, but an inspector's initial stamp R. Manufactured by Springfield Armory.
Approximate serial number range:
425,001 - 3,000,000
Manufacturing date range:
December 1941 through July 1944
Trigger is Type 2 (no tooling hole). Manufactured by Springfield Armory. Serial numbers 80,000 to end of production, so any time after October 1940.
Hammer marked with drawing number:
C46008-7 SA
Manufactured by Springfield Armory.
Approximate serial number range:
3,100,000 - 3,400,000
Manufacturing date range:
August 1944 through January 1945