SIONICS Enhanced Two-Stage Trigger Assembly

(1 customer review)


The SIONICS Two-Stage Trigger Assembly is a non-adjustable trigger assembly with a precision two-stage trigger allowing for precise and accurate trigger control.

Due to Market Conditions, the Estimated Ship Date is July 31, 2024 - August 5, 2024
SKU: S-TSTA Category: Product ID: 6454


The SIONICS Enhanced Two-Stage Trigger Assembly is a precision-engineered trigger assembly that provides precise and accurate trigger control. The trigger and hammer are both coated in Nickel Boron (NiB) to reduce friction and provide a smooth break and reset. The trigger pull weight averages 4.5 pounds.

Trigger Group Includes:

1 – Trigger (NiB Coated)
1 – Trigger Spring
1 – Disconnector
1 – Disconnector Spring
1 – Hammer (NiB Coated)
1 – Hammer Spring
2 – Trigger/Hammer Pin

SIONICS Warranty

The SIONICS Warranty

All SIONICS Weapon Systems Firearms, Receivers and Parts are manufactured for a Lifetime of Hard Use. The definition of a Warranty is a Guarantee from a manufacturer that a defective product will be repaired or replaced.

SIONICS Parts Warranty (Barrels, BCGs, LPKs etc.)

All SIONICS Weapon Systems Parts carry our Guarantee against defects in original materials and workmanship. If any SIONICS product shows evidence of such defects, we will fix, repair, or replace your product with that of an equal value product. SIONICS Weapon Systems does not warranty products or damage caused to our products by the correct or incorrect installation of other manufacturer’s products. 

Warranty Processing Instructions

Step 1:

Call 520.396.3460 (Monday – Thursday 7:00 – 17:00 MST) and speak with one of our Excellent SIONICS staff to begin the troubleshooting process of your product. If deemed necessary you will then obtain an RMA# (Return Merchandise Authorization) to initiate the warranty claim. Outside of business hours please email us at

Step 2:

Once established that your item should return to SIONICS for further inspection, you will need to ship your defective/non-working item.

Return the item to our facility:
Make sure your assigned RMA# is clearly displayed on the outside of all return packages. This is necessary to match each package to the correct warranty claim. In addition please include a document listing your RMA#, Name, Phone Number as well as email address.

ATTN: Warranty Department
SIONICS Weapon Systems
5118 E. Pima Steet
Tucson, Arizona 85712

Step 3:

Our team here at SIONICS will work quickly to process your claim. Once your item is received, we will inspect and test within one business day. If the item is deemed defective, we will communicate back to you on your claim with the appropriate plan for repair or replacement.


1 review for SIONICS Enhanced Two-Stage Trigger Assembly

  1. klfuller2

    You can’t beat the quality, look and price of this trigger! Very similar to the Geissele SSA-E, this trigger has a smooth, crisp take up and effortless break. Worth far more than the listed retail price. You can’t go wrong with this trigger!

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SIONICS triggers have an extremely clean break due to the NiB plating and our stringent machining and QC processes. SIONICS triggers also have an incredibly tactile reset allowing for quick and easy follow up shots or high round count strings of fire.

SIONICS trigger assemblies are much more reliable than “drop-in” and cassette style triggers due to the fact that it becomes much harder for debris to get lodged in your fire control group. SIONICS trigger assemblies do NOT require anti-walk pins like “drop-in” and cassette style triggers.

The most important parts to pay attention to would be your hammer and trigger springs. Generally, if you have worn out your barrel, your trigger and hammer springs are ready to be replaced.