Should I Have Passed On This Inland?

[painter777]

The Hand Guard looks every bit like a WRA Bull Nose to me. The Height of the Frt profile, The Side of Frt Profile, The Circular milling near the notch with inner milling circle over top of the outer circle.
The numbers in the stock channel look like 126 3 to me..... Maybe 126th day of 1943 ? Or May 6 1943 ?

3-6-43 WB show RMC sending 3,000 Hammers to Inland.
I always wonder about these 'Integrated parts'.
Did RMC send Hammers made for them (?) or Hammers they had 'Integrated' from another Prime or Sub (?)
That make any sense?