The Geissele SD-3G Super Dynamic 3 Gun Single Stage Trigger (05-166) has the same specs as the Super 3 Gun but with the flat trigger for a perceived shorter/lighter trigger pull.

The Geissele Super 3 Gun SD-3G trigger is a semi-automatic-only derivative of the two-stage Super Select-Fire SSF combat trigger that Geissele Automatics produces for customers in the U.S. Special Operations Community. The SD-3G was developed to combine the SSF combat trigger’s match-grade semi-automatic performance with its smooth single-stage full-automatic feel to make a fast, smooth, and robust trigger ideal for 3 Gun competition shooting.