This is a standard steel trigger guard from a Winchester Model 70 rifle.
Bluing - 80% - The bluing on this piece is significantly worn. The edges have lost the majority of their bluing and the finish is faded throughout the entire piece.
Metal - The overall condition of this piece is very good. There are several minor nicks, scuffs, and scratches, but no other significant marks of metal damage.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE