This is a standard steel trigger guard from a Winchester Model 70 rifle. 
Bluing - 95% - The original bluing is in excellent condition with no edgewear, fading, freckling or deep scratches.  There are a few tiny tool marks and one thin scratch at the top of the bow.  Otherwise, the piece is in nearly perfect condition.    
Metal - The metal is in excellent condition with no damage except for a few tiny tool marks. 
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE