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Geissele
Overview
The Geissele Automatics SD 3-Gun trigger is a single-stage trigger designed for the AR-15 and AR-10 platforms, providing a flat trigger bow for a consistent and comfortable pull. This trigger eliminates take-up and provides a clean break, which enhances accuracy and speed during competitive shooting situations. It is commonly found in builds focused on 3-gun competitions where quick follow-up shots and precision are essential.
Specifications
Available Merchants(9)
Prices checked
Price Alert
September 2026 on GunPartPicker
GEISSELE AUTOMATICS SD 3-GUN ranked #114 of the 228 triggers builders added on GunPartPicker in September 2026. Builders have been adding it to their builds on GunPartPicker since March 2026. All time, it ranks #58 of the 468 triggers builders have added. Builds with this trigger are mostly chambered in 5.56 NATO (69%, then .223 Wylde 19%), split between carbine-length (44%) and mid-length (44%) gas systems, and nearly all AR-15.
It was in stock most days in September 2026, and today 6 of the 9 retailers we track have it in stock. The best price crept up from $199.79 to $219.99 over September 2026. Buying today, the lowest price is $211.15 at KY Gun Company, above September's low of $199.79, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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Frequently Built With
The part most often added in each category by the builds that include this one
PSA JAKL 300 Blackout Complete Pistol Lower Classic EPT, Black
Radian Talon-GI Safety Lever - FDE
Aero Precision AR-15 Stripped Upper Receiver, No Forward Assist Black
Strike Industries Ambidextrous Magazine Release, Black - ARAMBIMRBK
Wilson Combat AR-15 Starburst Gunfighter Pistol Grip Black
Strike Industries AR-15 Ultra Light Pivot / Takedown Pins - FDE
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
CaliberBased on real build data showing which calibers builders choose alongside this product.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
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