The fire and safety selector is ambidextrous and has controls on both sides of the receiver which are taken from the design of the original G3 selector. Selector settings are described with letters: "S"—safe ("Sicher"), "E"—semi-automatic fire ("Einzelfeuer") and "F"—automatic fire ("Feuerstoß"). The three position fire selector has a 0°/45°/90° rotation pattern between the settings. HK also offers several other trigger options, including the so-called Navy trigger group, with settings analogous to the standard trigger, but the selector positions have been illustrated with pictograms. A semi-automatic only trigger unit (lacks the "F" setting) is also available.