CMMG Lower Parts Kit 556 Black
Complete lower receiver parts kit for AR-15 rifles in 5.56 NATO. Includes all components needed for assembly: trigger group, hammer, safety selector, magazine catch, bolt catch, buffer retainer, and A2 pistol grip. All parts meet or exceed mil-spec standards.
Complete AR-15 Lower Receiver Assembly Kit
The CMMG Lower Parts Kit provides everything you need to assemble a functional lower receiver for your AR-15 rifle. This comprehensive kit eliminates the guesswork of sourcing individual components and ensures compatibility across all parts.
What's Included
Trigger Group Components:
- Semi-auto trigger and hammer with proper geometry
- Hammer spring and trigger spring
- Trigger and hammer pins
- Semi-auto disconnector with spring
Safety and Controls:
- Safety selector (semi-auto configuration)
- Selector detent pin and spring
- Trigger guard assembly in aluminum alloy
- Trigger guard roll pin
Magazine and Bolt Systems:
- Magazine catch assembly with spring
- Magazine release button
- Bolt catch with plunger and spring
- Bolt catch roll pin
Receiver Hardware:
- Takedown and pivot pins with detent springs (2 each)
- Buffer retainer pin and spring
- A2 pistol grip with screw and lock washer
Quality and Compatibility
All components meet or exceed military specification standards, ensuring reliable performance and durability. This kit is designed for standard AR-15 lower receivers and works with any upper receiver assembly.
Next Steps
To complete your lower group, pair this kit with a buttstock kit. Once assembled, your lower receiver will be ready to accept any compatible upper receiver assembly.
Features
- all parts meet or exceed mil-spec
- fits ar-15
- for builds or repair
