Your comments, please...

[victorfourzulu]

Note the circular machining marks...

Information

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[Johnny Peppers]

Product of a bored person with a new set of letter dies. It is stamped just like a Springfield bushing, but the letter is too large, and the bushing is a WWII contract bushing.

[victorfourzulu]

Thanks Johnny. How do you tell it's a contracted part? I figured the machining lines indicated US&S manufacture.

[Johnny Peppers]

US&S did not make their barrel bushings. The concentric rings probably are an indication of how well the parts were completed before being finished as they arrived at US&S in a semi-finished state. All US&S pistols do not have the concentric ring barrel bushings, and a Remington Rand will occasionally show up with the concentric ring barrel bushings.
There is a good chance that the barrel bushings came from a sub-contract with the Remington Rand Ilion or Elmira plant.