A firearm slide and a firearm having a slide has a rail portion along which a slide moves translationally, the slide provides a plurality of serrations. The slide has a height and each serration of the plurality of serrations is cut into the slide along the entire height of the slide. The slide defines a horizontal axis and the plurality of serrations are angled relative to the horizontal axis. The serrations are in groups of serrations separated by one or more unserrated portions of the slide. The serrations being configured to maximize the thickness of the slide portion in the rail portion.