Iron sight system for handguns including a notched blade rear iron sight with view windows

1. A notched blade rear iron sight for handguns, comprising;

a blade structured to be mounted in a rear iron sight position on a handgun, the blade defining a notch for visual alignment with a front iron sight;

the blade providing view windows with a majority of said view windows located above a horizontal surface of the notch and to the left and to the right of the notch in the blade structure, the view windows occupying at least 10% of the blade structure to the left and to the right of the notch; and

the blade providing a leading side top portion indicating a straight sightline over, and to the left and to the right of, the notch.

2. A notched blade rear iron sight for handguns, comprising;

a blade structured to be mounted in a rear iron sight position on a handgun, the blade defining a notch for visual alignment with a front iron sight;

the blade providing two view windows with a majority of said view windows located above a horizontal surface of the notch and to the left and to the right of the notch in the blade structure, the view windows occupying at least 10% of the blade structure to the left and to the right of the notch; and

with the blade oriented in an upright position, the view windows of a leading side of the blade providing a horizontal dimension greater than a vertical dimension.

3. The notched blade rear iron sight for handguns of claim 1 or 2 wherein the view windows provide a viewing area through a leading side of the blade structure of between 4 to 10 times a view area defined through the leading side by the notch.

4. The rear iron sight of claim 3 wherein the view windows occupy approximately 40% to 70% of the leading side of the blade structure to the left and to the right of the notch.

5. The rear iron sight of claim 3 wherein the leading side of the blade defines a notch with three substantially straight contiguous sides.

6. The rear iron sight of claim 2 wherein the area defined by the view windows and by the notch in the blade structure widens from a leading side to a trailing side of the blade.

7. An iron sight system for handguns comprising the notched blade rear iron sight of claim 1 or 2 and a front iron sight structured for location on a front end of the handgun with the front iron sight providing a view of a target therethrough.

8. The rear iron sight of claim 1 or 2 wherein the view windows are circumscribed by blade structure.