1. A sight for a firearm, comprising: a forward sight toward a first end of a gun; a rear sight toward a second end of said gun; said rear sight having a first aperture and a second aperture, said second aperture being offset in two directions from said first aperture; said forward sight having a first sight feature and a second sight feature both of which are simultaneously sighted in through said first and second apertures; of said rear sight, respectively, to aim relative to two axes; said second aperture being substantially related in relative viewing size to said second sight feature; said first and second sight features differing in at least one characteristic.