Need Help in ID of Parts & Stock

[U.S.Patriot]

I am new to this great treasure of a site, I have posted better photo's this time. I woud like to know what the Markings Represent, The stock Markings I am very puzzeled as no one thus far knows. Thank you for your help, Stamps on Front Sight, Mag release, and Rear sight and two on the stock.
Semper Fi

Information

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[DaveHH]

Front sight, Simpro Mfg Co for IBM
Mag Catch, Wadsworth Watch case Co Replacement part?
Rear sight, Packard for Inland
Can't help on the stock.

[U.S.Patriot]

Thank you, I did not think replacement parts were stamped? Is The stock possibly Foreign?

[painter777]

Dave,
Isn't the mag catch WA same as the WA straight hammers? WWII replacement parts by Walt Arms or Walt Manufacturing? Or some name like that. I recall a talk with Mr. Ricca about WA marked parts.

Stock is Birch, Any slingwell marking? Not sure of those pictured markings. Maybe proof markings used by a foreign country.

Charlie-painter777

[INLAND44]

I believe the 'M' on the mag catch is 'Modified'. The stock markings are not USGI. The carbine, or at least the stock, is an import.

[jimb16]

The mag catch is Walt Manuf. not Wadsworth Watch. Both used the same marking, but on different parts.

[Bruce McAskill]

The carbine is a rebuilt and is a mix of different war time parts and the stock as Inland said has be overseas and I would guess from Germany or Austria maybe and is a replacement.