You can't ever take just one book as gospel... but, on NPM receivers, Larry Ruth (War Baby) says U is US&S as well. Uncommon Marking!Clermont, You may be right but Harrison's M1 Carbine II books says US&S.
You can't ever take just one book as gospel... but, on NPM receivers, Larry Ruth (War Baby) says U is US&S as well. Uncommon Marking!
underwood made bbls for the NPM carbine - mine has one of these , the "U" subcontracor code was used , but its been my understanding that union switch & signal made about 50000 recievers for NPM , IIRC they were late in their delivery and there is no definable time period/date of production documentation , wheresa inland made recievers for NPM are defined for date , numbering- less than 750 thus making those fairly rare , and IBM made recievers are a definete period of use , and underwood supplied about 7500 recievers with a defined date use ,
i dont have any notes on where or how the markings of union switch or underwood were applied to the reciever , but both produced them
I am curious to learn whether Underwood made barrels for Inland as well or might Inland have acquired barrels from Underwood for some of their carbines. The reason I ask is because I have a non-import Inland with a 210,XXX serial number with an Underwood 3-44 dated barrel and I have always wondered whether the barrel is original to the receiver.underwood made bbls for the NPM carbine...
I also believe that you are right as mine Inland is marked "Inland Division / General Motors."The Underwood barrel is a replacement. Inland produced their own barrels as well as having excess production capacity to supply M1 Carbine barrels to the Government Free Issue program.