Geissele Automatics Super Semi-Automatic Two Stage Trigger .154"

Manufactured by Geissele Automatics
MPN: 05-101
Manufactured by Geissele Automatics
109 Reviews

In Stock

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The Geissele SSA trigger installs in your lower receiver in the same way that a Mil-Spec trigger is installed and uses a standard .154” trigger and hammer pin so it will fit in any Mil-Spec stripped lower receiver. It features a curved trigger bow that feels comfortable on your finger and helps give you a consistent pull every time. 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
  • Designed for combat, home defense, and Law Enforcement use
  • Smooth, consistent two-stage trigger pull
  • Comes with one 4.5lb. trigger spring
  • EDM wire cut from heavy duty tool steel
  • Features a curved trigger bow for maximum ergonomics
  • Great for close quarters combat (CQB) and mid-range carbine work
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 Automatics Super Semi-Automatic (SSA) Trigger is designed for home defense, combat, and reliability. It is modeled after the Super Select-Fire trigger that was developed for the United States Special Operations groups and features a 4.5lb, non-adjustable trigger pull weight. It is a two-stage trigger that gives optimum trigger control during high adrenaline situations while still being smooth and crisp enough to make precise shots when you need to. This trigger is safety certified by the Crane Naval Surface Warfare Center and is recommended for Law Enforcement use. Install the Geissele SSA in your AR-15 lower receiver and you won’t ever have to worry about missing those important shots.

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.
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BrandGeissele Automatics
Drop InStandard Assembly
ManufacturerGeissele Automatics
Trigger BowCurved
TypeTwo Stage
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

109 reviews




I bought one of there for my wife to help her out. Easy install and out to the range. She suprised her self when she was consistantly hitting a steel silhouet at 300yds free hand with her AR. well worth the money. And by the way, I have an SSA in my AR now!

Top Notch Trigger!


After easily installing the new Geisselle SSA trigger in my SR-556 and giving it a try at the range, I can't say enough good things about it. It makes even a "better than average" AR type rifle even more enjoyable to shoot and your accuracy goes up a quantum amount with this trigger. I can only imagine what a Match trigger from Geisselle would be like! The service from Primary Arms was great with quick delivery!

Great Trigger


As advertised. Nice 1st and 2nd stage. Installation was a snap - do not forget to use the included slave pin during trigger pin installation. It makes life easier.

Geissele SSA - Worthwhile Upgrade


Be careful, this will spoil you for using stock triggers.

SSA Trigger


Beware, if you have ordered one of these, go ahead and set aside some money to order more to go in each rifle you own. These triggers ROCK!

Great product, great price. It works.


Clean, crisp trigger. Never used a 2 stage before but I like it for my long range AR 10.

Geissele triggers


Compare your standard trigger systems geissle is the difference between night and day! Primary arms has the best deals I've found in the last 20 years shopping on line! The customer service is the very best as well! The orders are backed by a fast email invoice return followed by fast shipping! I'm glad I found!

SSA is GTG and Primary Arms is the place to buy


Don't know what more I can say that hasn't in these review. this is an excellent trigger to go with for most AR owner uses. Geissele offers other options for competition shooters and to which I do not have experience. The enhanced/SSAe version does have a different feel in the travel and break than the SSA but I believe it to be too light for most uses and there to be other superior offerings in a lighter trigger. Thanks again to Primary Arms for their superior CS and unremarkable shipping speed.

A bit over rated


Dont want to give the wrong impression, this is a great trigger but some will tell you its flawless. It is not. Mine has a very small amount of creep and you have to be really particular about your trigger for it to be worth $170.Im not sure its worth $100 more than the ACT, but in truth its probably the best battle trigger you can buy.

crisp and smooth


Easy to install and fair price. Thanks primary arms