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Geissele Automatics 05167 SD-E Two-Stage Flat Trigger with 2.90-3.80 lbs Draw Weight & for AR-15/AR-10
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$249.99
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SKU: 05167-854014005151
Overview
Built for AR-15 and AR-10 rifles, this two-stage trigger is aimed at shooters who want more deliberate control in precision-oriented setups. Its flat trigger bow is designed to support a consistent trigger feel, while the listed 2.90-3.80 lb draw weight places it in a lighter, more refined range than a standard service trigger. Geissele positions the SD-E for Squad Designated Marksman-style rifles, where accuracy and reliability matter alongside a robust, combat-proven design.
Why Hunters Choose the Geissele
Two-stage Design
Supports controlled trigger break and
Flat Trigger
Bow offers a distinct feel
Precision Squad
Designated Marksman style rifles
Maintains Geissele's
Combat-proven two-stage trigger platform
Mil-spec Size
Fits AR-15 and AR-10 applications
Key Features
- Geissele Super Dynamic-Enhanced (SD-E) two-stage trigger
- Exclusive flat trigger bow for a distinct trigger profile
- Designed to provide enhanced trigger control
- Intended to support weapon accuracy
- Mil-Spec size with steel construction
- Black finish
- Suitable for AR-15 and AR-10 platforms
Best Used For
- Precision AR-15 or AR-10 builds where enhanced trigger control is a priority
- Squad Designated Marksman style rifles needing a two-stage trigger setup
- Hunters who want a flat trigger bow for a more controlled press
- Shooters building a mil-spec sized trigger with a focus on reliability
Specifications
| Blade Finish | Black |
|---|---|
| Compatible Platforms | AR-15/AR-10 |
| Draw Weight | 2.90-3.80 lbs |
| Material | Steel |
| Model | SD-E |
| Size | Mil-Spec |
| Trigger Bow | Flat |
| Trigger Style | Two-Stage |
| Type | Trigger |
Pros
- Two-stage design supports controlled trigger break and deliberate shot placement.
- Flat trigger bow offers a distinct feel for enhanced trigger control.
- Designed for precision Squad Designated Marksman style rifles.
- Maintains Geissele's combat-proven two-stage trigger platform.
- Mil-Spec size fits AR-15 and AR-10 applications.
- Steel construction with black finish matches the listed specifications.
Considerations & Trade-offs
- Two-stage operation adds a more deliberate trigger feel, so it may not suit users who prefer a simpler single-stage setup for fast, straightforward breaks.
- The flat trigger bow changes finger placement and feel compared with a curved trigger, which is a preference-driven trade-off rather than a universal upgrade.
- It is presented as ideal for precision Squad Designated Marksman type rifles, so it is more specialized than a general-purpose trigger choice.
- Mil-Spec sizing suggests compatibility within that format, but fit should still be confirmed against the intended AR-15/AR-10 build before purchase.
Suggested Comparisons
- Two-stage AR trigger
- Flat trigger bow trigger
- AR-15 trigger upgrade
- AR-10 trigger upgrade
Suggested Accessories
- AR-15/AR-10 lower parts kit
- Trigger guard
- Punch set
- Gun vise
Frequently Asked Questions
What type of trigger is the Geissele SD-E?
It is a two-stage trigger with an exclusive flat trigger bow.
What firearms is the SD-E intended for?
The product data says it is for AR-15 and AR-10 platforms.
What pull weight is listed for this trigger?
The title lists a draw weight of 2.90-3.80 lbs.
What does Geissele say this trigger is designed to improve?
The description says it is tuned for enhanced trigger control and weapon accuracy while maintaining robustness and reliability.
What material and finish are listed for the SD-E?
The listed specifications say Steel material with a Black finish.