Saginaw SG or Inland ??

Receiver Saginaw SG SN.3488309 Barrel Inland 3/44. All parts are either Inland or Saginaw except for the bolt which is Nat. Postal. Receiver has a SG on left side under the wood. Believe the rifle has been through a rebuild but no marks on stock. Stock has RSG in sling well with a large O above the initals. Hand guard has a small w which I assume is for Winchester. Stock is unmarked, a beautful piece of wood and barrel is in excellent condition. Do I have a Sagaw SG or and Inland. Any help will be appreciated. Will have other questions on a Standard Product later on with your permission. Riesch"s comments on receivers is what brings the question to my ageing mind. My Golden Retriever had that section for lunch.

You have a rebuilt Saginaw Gear carbine.

Thanks BrianQ. I assumed the same. Any thoughts on where the re-build might have taken place?