Geissele Automatics SD-E Super Dynamic Enhanced 2-Stage Trigger

Precision Starts with the Trigger

The Geissele Automatics Super Dynamic Enhanced (SD-E) is engineered for shooters who demand maximum precision without sacrificing the reliability Geissele is known for. Based on the legendary SSA-E, the SD-E replaces the traditional curved trigger shoe with a flat trigger bow, providing improved trigger control, a more consistent finger placement, and enhanced shooting performance.

Featuring a light, smooth first stage followed by an exceptionally crisp second-stage break, the SD-E delivers the precision required for long-range shooting, competition, and precision-focused AR-15 builds while maintaining the rugged durability of Geissele's combat-proven two-stage design.

Whether you're building a precision rifle, designated marksman rifle, or high-performance competition gun, the SD-E offers one of the finest trigger pulls available for the AR platform.

Features

• Flat trigger bow for enhanced trigger control
• Smooth, light first-stage take-up
• Crisp, clean second-stage break
• Precision-machined tool steel components
• Full-strength hammer spring for dependable primer ignition
• Non-adjustable design for long-term reliability
• Made in the USA

Specifications

• Trigger Type: 2-Stage
• Trigger Bow: Flat
• 1st Stage Pull Weight: 2.0–2.5 lbs.
• 2nd Stage Pull Weight: 0.9–1.3 lbs.
• Total Pull Weight: 2.9–3.8 lbs.
• Adjustable: No
• Pin Size: Small Pin (.154")

Why Choose the SD-E?

The SD-E was designed for shooters who prioritize ultimate accuracy and precision. Compared to standard combat triggers, the lighter second-stage break allows for greater control during slow, deliberate shots while still providing the positive reset and durability Geissele triggers are known for.

Ideal for:

• Precision AR-15 builds
• SPR and DMR rifles
• Competition shooting
• Long-range applications
• Enthusiasts seeking the highest level of trigger refinement

Compatibility

Compatible with:

• AR-15
• M4
• AR-10/LR-308 platforms utilizing .154" small-pin trigger pins

Not Compatible With:

• SIG MCX
• SIG MPX
• AR-15 pistol caliber carbines (PCC)

For those platforms, Geissele recommends the Super MCX SSA or Super MPX SSA trigger.

Shipping Information

As a small business committed to maintaining operational efficiency and cost-effectiveness, Ocean State Armory operates on a just-in-time inventory model rather than stocking every product in-house.

Please allow 5–7 business days for order processing before shipment.

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