Importance

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Abstract

are co-linear and oriented horizontally. In another aspect, the rear sight has at least one aperture plate having an aperture formed therein which defines an entrance pupil for an eye of a shooter of the rifle. The entrance pupil is horizontally elongated having a height h and a width w, the width w being at least about 125% of the height h, the height h being smaller than a diameter of a pupil of the eye of the shooter and of such a value that the entrance pupil is adapted to cause the horizontal top edge of the front sight post and a horizontal edge of a target to be more sharply focused than if viewed by an unaided eye, the width w being of such a value that an area defined by the entrance pupil is greater than an area defined by a circular entrance pupil having a diameter equal to the height h, thereby permitting more light to pass through the entrance pupil than through the circular entrance pupil, and causing the front sight post and the target to appear brighter than if viewed through the circular entrance pupil.

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First Claim