Developed for use by the U.S. Special Operations Community, the Geissele SSF Super Select-Fire Trigger provides unmatched reliability and performance that you can count on. These Rifle Triggers are two-stage triggers with two separate modes: semi-automatic and fully automatic. In semi-automatic, you have precise trigger control with the two-stage firing process that lets you place accurate shots consistently. For fully automatic mode, the SSF Super Select-Fire Trigger becomes a single-stage trigger with a smooth, continuous trigger pull and abrupt hammer release. This makes it as versatile as possible with the ability to be used in countless situations, whether you're active military or looking for an upgrade to your favorite ranch rifle.