Leupold DeltaPoint Pro Rear Iron Sight, Black Matte Finish 120058 Leupold is pleased to introduce the DeltaPoint Pro rear iron sight. This iron sight allows co-witnessing through the DeltaPoint Pro and speeds up aiming point target acquisition. Having the back up rear sight also is essential in case you have a battery failure during use. This rear sight is specifically made for use with DeltaPoint Pro's which are mounted on pistols.