The Geissele Super Dynamic Enhanced trigger, SD-E (Geissele part no. 05-167), is a two-stage trigger for semi-automatic AR-platform rifles with an exclusive flat trigger bow. Geissele tuned it for enhanced trigger control and accuracy while keeping the robustness and reliability of its combat-proven two-stage design. It is the enhanced version of Geissele’s Super Dynamic duty trigger. Everything lives in a self-contained housing that drops into a standard AR-15 lower receiver without additional fitting. That makes it an easy upgrade for a duty or defensive carbine.

Key Specifications

• The trigger is two-stage, with a defined take-up and break.
• The bow is an exclusive flat design that Geissele builds into the Super Dynamic Enhanced.
• Geissele lists enhanced trigger control and accuracy as the goal of this enhanced model.
• It keeps the robustness and reliability of Geissele’s combat-proven two-stage trigger.
• It is the enhanced version of the Super Dynamic duty trigger, so the family resemblance is deliberate.
• The trigger group is a self-contained housing, so the parts arrive already assembled.
• Housing length is about 5.55 inches, sized for a standard mil-spec fire control pocket.
• It installs as a drop-in unit with no additional fitting.
• The pull is non-adjustable, so there is nothing to set after installation.
• It is built for semi-automatic AR-platform rifles using a standard lower receiver.

Frequently Asked Questions

Is the SD-E a drop-in trigger? Yes. The SD-E is a self-contained unit that installs in a standard AR-15 lower without additional fitting.

Is the SD-E single-stage or two-stage? It is a two-stage trigger with Geissele’s exclusive flat trigger bow.

What platform does it fit? It is made for semi-automatic AR-platform rifles that use a standard mil-spec lower receiver.

Buy the Geissele SD-E Super Dynamic Enhanced Two-Stage AR Trigger

The SD-E gives a duty rifle a trigger group that is easy to install and tuned for control. Order it from our Geissele Automatics lineup of AR triggers at our Lubbock, Texas gun shop for fast, insured shipping.