Geissele Automatics AR-15 Super Dynamic Combat Trigger – .154 Pin




The Geissele SD-C trigger installs in your lower receiver in the same way that a Mil-Spec trigger is installed. It uses a standard .154” trigger and hammer pin so it will fit in any Mil-Spec stripped lower receiver. It features a flat trigger bow that gives you more leverage to reduce perceived trigger pull weight and improves the tactile feedback so you can feel the reset and pull the trigger faster. Not only does it work in 5.56 or .223 AR-15 rifles, but it works in .308 AR-10 pattern rifles. Each trigger is precision EDM wire cut from heavy duty tool steel with a durable black finish giving you the reliability and durability you can depend on.


  • Uses Mil-Spec .154” trigger pins for maximum compatibility with lower receivers
  • Works with 5.56/.223 and .308 AR pattern rifles
  • Manufacturer Number: 05-165
  • Geissele Automatics AR-15 Super Dynamic Combat(SD-C) 2 Stage Semi-Automatic Trigger Black
  • Two Stage Trigger Total Pull Weight 4.5 lbs
    • 1st Stage Weight 2.5 lbs
    • 2nd stage Weight 2.0 lb
  • Non-adjustable
  • Flat trigger bow
  • Recommended for Law Enforcement, Home Defense, and Hunting
  • Color: Black

Note: Trigger pull weights are approximate and may vary slightly between rifles.

When building or upgrading your AR-15 rifle, one of the most important components is the trigger. There are many triggers out there so you must ask yourself what are you are going to do with the rifle. Are you going to use it for plinking at the range, home defense, competition, or long-range precision shooting? The answer of this question will help you to understand what trigger you will need. The Geissele Super Dynamic 3 Gun (SD-3G) Trigger is designed specifically for 3-gun competition where extremely fast follow-up shots in close quarters are required. It features and extremely short length of pull with a quick reset that puts it between a two-stage and single-stage trigger while still benefiting from the safety and reliability of a combat two-stage trigger. This trigger is non-adjustable, but it comes with two trigger springs so you can choose to have either a 4lb. or 3.25lb. pull weight. The SD-3G is the perfect edition to your race gun that will help you master rapid follow-up shots and target acquisition while under pressure from the timer.

Geissele Automatics manufactures confidence, offering quality triggers and components for the warfighter and competitor. They were established in 2004 with the mission to build the highest quality, reliable triggers for competition and their first trigger, the Hi-Speed National Match trigger, was so popular that they were asked by the Department of Defense to produce a select-fire trigger for the United States Special Operations. Again, it was a success and Geissele decided to bring a semi-automatic version to the civilian market for law enforcement and personal protection.


Adjustable – Non-Adjustable
Drop In – Standard Assembly
Manufacturer – Geissele Automatics
Platform – AR-15/AR-308
Total Pull Weight – 3.25lbs. or 4lbs.
Trigger Bow – Flat
Trigger Pin Diameter – MIL-SPEC .154
Trigger Style – Single Stage


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