This is a featherweight aluminum trigger guard from a Winchester Model 70 rifle. 
Bluing - 85% - This trigger guard appears to wear its original factory finish in very good condition.  There's slight finish loss along the sharp edges of the bow.  There are also a few scratches and imperfections in the bluing along the top of the bow.        
Metal - The metal is in very good condition with some very light scratches.  There is one notable ding to the metal located on the side near a screw hole.  See last photo.    
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE