Geissele Automatics Super 3 Gun S3G Hybrid AR-15 Trigger .170" Large Pin

Manufactured by Geissele Automatics
SKU: 05-174
MPN: 05-174
Manufactured by Geissele Automatics
(0) No Reviews yet
$199.99 $300.00

In Stock

Standard orders will ship out in 1 business day (M-F) if ordered by 3:30 pm CST. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination. NFA items will take longer to ship and are dependent upon ATF processing times.

For individual Officer, First Responder, and Military pricing please make sure you are logged in. for details



The Geissele S3G trigger installs in your lower receiver in the same way that a Mil-Spec trigger is installed. It uses a Colt large pin .170” trigger and hammer pin so it will NOT fit in any Mil-Spec stripped lower receiver. It features a curved trigger bow that gives you optimum trigger control and ergonomics. 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 Colt-spec .170" large trigger pins for maximum compatibility with lower receivers
  • Works with 5.56/.223 and .308 AR pattern rifles
  • Designed as a 3 gun competition trigger
  • Smooth, consistent hybrid trigger pull
  • Includes one 3.25lb spring and one 4lb spring
  • EDM wire cut from heavy duty tool steel
  • Features a curved trigger bow for increased ergonomics

  • Trigger pull weights are approximate and may vary slightly between rifles.
  • NOT compatible with receivers lowers

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 3 Gun (S3G) Trigger is designed specifically for competition use where fast follow-up shot and quick target acquisition are required. It features a hybrid single stage trigger that maintains the safety and reliability of a two-stage trigger while still being extremely light and smooth. It has a short pull and quick reset making it easy to shoot your semi-automatic rifle fast. This model comes with one 3.25lb trigger spring and one 4lb trigger spring so you can customize it to your preference. Drop this trigger in your 3 gun competition rifle and you will immediately see a drop in your time during a stage.

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.
See More


BrandGeissele Automatics
Drop InStandard Assembly
Total Pull Weight1.5 lbs to 5 lbs
Trigger BowCurved
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

Ratings & Reviews

No reviews available

Be the first to Write a Review