This is a standard steel trigger guard from a Winchester Model 70 rifle.
Bluing - 85% - The is a nice part, with 1 minor blemish on the back of the bow - a screwdriver mark. The remainder of the bluing is in very good condition with slight edge wear and a small rub toward the front of the bow.
Metal - No metal defects on this piece.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE