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Questions & Answers
I'm building an ar-10 (308) from scratch is this considered a drop in trigger and will it work with my aero precision lower Expert Answer

The Geissele 2 Stage Trigger will work in an Aero Precision M5 Lower.

by Hunter, Gear Expert, December 19, 2022
Someone answered this purchase should include all necessary parts. Can someone confirm that does intact mean pins?

I have purchased 5 Geissele triggers, 3 of which are the Geissele G2S(the model in question). Every Geissele trigger comes with trigger pins.

by JohnR, Verified Owner, March 24, 2022
Customer Reviews
Helpful Positive Review
Geissele G2S by Rick, January 12, 2026
Excellent trigger, very high quality, easy install, clean crisp break, good reset, great hunting trigger.
2/2 found this helpful
Helpful Positive Review
G2S Review by Juice, Verified Owner, April 15, 2016
Bought to replace stock Stag mil-spec trigger that had an unacceptable amount of creep even after installing lighter springs and polishing the trigger contact surfaces. I'm experienced at doing trigger jobs but the G2S installation with included inst...
Read More...
47/48 found this helpful
Helpful Positive Review
Geissele trigger by Richy, Verified Owner, December 7, 2025
This is my second trigger, the same brand and is working amazing. And planning to get three more for my AR’s.
1/1 found this helpful
Helpful Positive Review
my second geissle by steven, Verified Owner, December 25, 2025
You really can’t beat the quality and reliability of geissle. Trigger is very crisp and accurate would recommend to anyone looking to get more accurate
1/1 found this helpful
Helpful Positive Review
Great trigger! by Jason, Verified Owner, December 11, 2025
Smooth operation and consistent pull. Just what is expected from this company.
1/1 found this helpful
Helpful Positive Review
Phenomenal Trigger by Double A, Verified Owner, March 20, 2024
Excellent trigger from an even better company. Bought to replace a mil-spec trigger group and could not be happier with the purchase. The difference in "pull" is like comparing having to turn a key to start a car versus a "push to start". Smooth take...
Read More...
3/3 found this helpful
Read All 154 Reviews
Color:
Black
Trigger Shape:
Curved
Trigger Pull Weight:
4.5 lb
Trigger Pin Size:
Mil-Spec
Hand:
Ambidextrous
Gun Make:
AR Platform
Gun Model:
AR-10, AR-15
Condition:
New

Code: 1TO-ART-GSSLT-05-145

MPN: 05-145

UPC: 854014005045

List: $170.00Save $4.51
$165.49

Product Info for Geissele 2 Stage Trigger

The Geissele 2 Stage Trigger is a high-quality, cost-effective model of the popular Super Semi-Automatic (SSA®) trigger that they have been producing for years. These drop-in AR Triggers are easy to install and provide an immediate improvement over factory trigger systems, giving you a crisp, reliable trigger pull that you can feel and control through the entire shooting process. This helps you place your first shot and follow-up shots as accurately as possible, as you can clearly feel the break between the two stages and when you fire the shot. Pick up the Geissele 2 Stage Trigger today to take your AR15 to the next level.image

WARNING: California`s Proposition 65

Specifications for Geissele 2 Stage Trigger:

Manufacturer: Geissele
Color: Black
Trigger Shape: Curved
Trigger Pull Weight: 4.5 lb
Trigger Pin Size: Mil-Spec
Hand: Ambidextrous
Gun Make: AR Platform
Gun Model: AR-10, AR-15
Gun Type: Rifle
Condition: New

Package Contents:

  • Geissele Automatics Tactical 2-Stage Trigger, 1TO-TRA-G2S

Geissele 2 Stage Trigger Orderable Models

List of Orderable Models

  • Geissele 2 Stage Trigger, Curved, 4.5 lb Pull, Black, 05-145 , MPN: 05-145 , UPC: 854014005045 , Code: 1TO-ART-GSSLT-05-145

Geissele 2 Stage Trigger Unavailable & Discontinued Models

List of Unorderable Models

  • DEMO, Geissele Two-Stage Trigger , MPN: 05-145-DEMO , Code: 1TO-ART-GSSLT-G2S-DEMO
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