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Product information
Overview
CMMG AR-15 Zeroed Lower Parts Kit Gunbuilder's Kit
Description
Customization is endless with the AR15 platform which is why the CMMG ZEROED Mk4/AR15 Gunbuilder’s Kit includes all of the essential parts except the most commonly upgraded ones: Trigger Guard Fire Control Group and Pistol Grip. Check out our interactive install walkthrough video below or read the CMMG Resources LPK Install article for an in-depth breakdown. All parts meet or exceed mil-spec. All installation hardware included.
Kit Includes:
- Bolt Catch Plunger Spring & Roll Pin
- Trigger/Hammer Retaining Pins
- ZEROED 60°/90° Adjustable Ambi Safety Detent & Spring
- ZEROED Ambi Magazine Catch & Spring
- ZEROED Magazine Release Button
- HD Pivot/Takedown Pins Detents & Springs
- Buffer Retainer & Spring
Specifications
| Manufacturer | CMMG |
|---|---|
| SKU | CA55CA6BA |
| UPC | 810097502314 |
| Manufacturer Part Number | 55CA6BA |
| Shipping Weight | 0.12 |
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Questions & answers
How will this item ship?
Eligible non-firearm items may ship to an address that meets shipping rules, or you can choose local pickup at STX Bullseye when available. Restrictions can apply by product and destination.
Does this require an FFL transfer?
This listing does not require an FFL transfer. Firearm receivers and other regulated items are labeled separately when FFL transfer is required.
What if I have compatibility questions?
Contact STX Bullseye before purchase if you need help confirming fitment, caliber, or mount compatibility. Staff can review the listing details with you.
How do I contact STX Bullseye?
Call (956) 314-0879 or visit the Contact page. Store hours and location details are listed on Contact and About.
Answers are general store information and are not personalized legal advice.
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