On the brass plate is it thin enough to conform to the angles on the Krag trigger guard. Maybe for the sporter stock the angles were removed and the trigger guard straitened? If very accurately placed the brass strip could take out the side to side play. If it takes out too much of the trigger travel it could leave it with dangerously little sear engagement. On a well made custom sporter that should not be an issue. I would double check the engagement just to be sure that it is still good and not monkeyed with in the almost century since it was built.

Over all it has a very nice professional look to it.