SIONICS Premium Lower Parts Kit


This parts kit includes our Enhanced Two-Stage Trigger, as well as the highest quality springs, pins, and components. This ensures that your rifle will be built with the best possible parts and components, resulting in a reliable and accurate firearm.

58 in stock

Due to Market Conditions, the Estimated Ship Date is June 3, 2024 - June 6, 2024
SKU: S-EPK-TS Category: Product ID: 15230


The SIONICS Enhanced Two-Stage Trigger 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.

The Premium Lower Parts Kit contains the following:

1- SIONICS Enhanced Two-Stage Trigger
1- Semi Auto Disconnect
1- Enhanced Hammer
2- Hammer / Trigger Pin
1- Trigger Spring
1- Hammer Spring
1- Disconnector Spring
1- SIONICS Ambidextrous Selector – Long on left side and Short on right side.
1- Safety Detent
1- Safety Detent Spring
1- Standard Bolt Catch
1- Bolt Catch Plunger
1- Bolt Catch Roll Pin
1- Bolt Catch Spring
2- Takedown / Pivot Spring
2- Takedown / Pivot Detent
1- Takedown Pin
1- Pivot Pin
1- Magazine Catch
1- Magazine Release Button
1- Magazine Catch Spring
1- Buffer Retainer Pin
1- Buffer Retainer Spring


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. 


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.


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