Geissele Automatics Super Dynamic 3 Gun SD-3G AR-15, AR-10 Single-Stage Flat 3.0-5.5 lb Trigger

The Geissele Automatics Super Dynamic 3 Gun (SD-3G) is a single-stage, flat-bow trigger built specifically for 3-Gun competition, where a shortened pull length and a lightning-quick reset translate directly into faster splits and cleaner stage times. Built around a Hybrid Rolling Break action, the SD-3G delivers a crisp, consistent break while keeping sear engagement locked in under the recoil and rapid fire that define the sport.

The SD-3G drops into any MIL-SPEC AR-15 or AR-10 lower receiver and ships with two springs so the shooter can tune the total pull to the platform and the discipline. The lighter spring produces a total pull weight of roughly 3.0 - 4.0 lbs, while the heavier spring brings the total up to 4.5 - 5.5 lbs. The trigger is non-adjustable; its geometry is engineered to hold weight and feel consistent across long strings of fire without the shooter chasing a sear screw.

Manufactured by Geissele Automatics in the USA and designated part number 05-166, the SD-3G is the drop-in trusted by competitive 3-Gun shooters and recreational riflemen alike who want a fast, repeatable pull without giving up the reliability, safety margin, and quality Geissele is known for.