The Geissele Super Dynamic Enhanced Trigger (SD-E) (brand part number 05-167) is a drop-in trigger built by Geissele Automatics for semi-automatic AR-platform rifles. As the enhanced version of Geissele’s Super Dynamic duty trigger, the SD-E carries the same reputation for reliability that Geissele’s trigger groups have built with military and law enforcement users, packaged into a self-contained housing that drops into a standard AR-15 lower receiver. The housing measures roughly 5.55 inches, sized to fit a standard mil-spec fire control pocket, and it installs without any additional fitting.

Key Specifications

• Part of Geissele’s Super Dynamic Enhanced (SD-E) trigger lineup.
• Built for semi-automatic AR-platform rifles.
• Housing measures approximately 5.55 inches, sized for a standard AR lower.
• Installs as a drop-in unit with no additional fitting.

Frequently Asked Questions

What platform does this trigger fit? Semi-automatic AR-platform rifles using a standard mil-spec lower receiver.

Is this a drop-in trigger? Yes, the SD-E is a self-contained unit that installs without additional fitting.

Buy the Geissele Super Dynamic Enhanced Trigger

Add a duty-proven Geissele trigger to your AR-platform rifle. Order the SD-E from our Geissele Automatics lineup of AR triggers for fast, reliable shipping from our Lubbock, Texas gun shop.