Congratulations! Not sure what that red marks are but could it be some kind of magic marker? I love the nice USGI finish on the metal. Now go find you a lock bar and a milled trigger guard to complete that "WWII Garand look" on that rifle.
You did not take a pic of the left side of the stock above the trigger to show the cartouche. Is it a WWII or DAS stamp? If DAS we need to see the back porch to determine if it is an SA or HRA stock.