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Geissele® Triggers are precision-made in the USA to help you squeeze more accuracy and better performance out of your rifle. The Super Dynamic-Enhanced (SD-E) is the flat-bow version of the proven SSA-E, designed to provide enhanced control and weapon accuracy while maintaining the robustness of a 2-stage trigger.
The SD-E’s reduced first- and second-stage pull weights result in a trigger with a smooth, light first stage take-up and a crisp, candy cane-like second stage break. The SD-E is ideal for use in precision Squad Designated Marksman-type rifles where weapon accuracy and reliability are critical and non-adjustability is a requirement.
More on the Mechanics
Geissele uses the most sophisticated manufacturing methods to deliver a truly outstanding trigger pull. All sear surfaces are precisely cut by a wire EDM machine, which leaves a non-directional surface finish for a smooth trigger pull without the associated grittiness normally left by milling machines. The initial force needed to start the disengagement of the sear surfaces is low, and the force increases linearly at a low rate. This helps the hammer to fall at the desired point of aim and builds shooter confidence in the weapon’s ability to place rounds on the point of aim.
A full force hammer spring is used for quick lock-time and positive ignition of all ammunition types. No lightened hammer spring is used. The hammer itself is lighter than a standard AR-15 hammer, further decreasing lock-time and increasing accuracy of the weapon. The net effect is greater accuracy and precision while shooting on the move, shooting with the weapon in movement, and during increased cadences of fire.