Free shipping on all orders over $200
Complete your AR-15 build with confidence using the CMMG AR15 Lower Parts Kit 5.56. This comprehensive kit contains every essential component needed to transform your stripped lower receiver into a fully functional firearm. Engineered by CMMG, a trusted name in firearms manufacturing, this lower parts kit delivers the precision, reliability, and durability that serious builders and shooters demand. Whether you’re assembling your first AR-15 or adding to your collection, this kit provides everything necessary for a professional-grade build.
AR15 Lower Parts Kit 5.56 What’s Included
- Trigger assembly with hammer and trigger springs
- Safety selector switch with detent and spring
- Magazine release button with spring
- Bolt catch assembly with spring and roll pin
- Trigger guard with roll pin
- Pistol grip with screw and lock washer
- Buffer retainer with spring
- Takedown pins (front and rear) with detents and springs
- Hammer pin and trigger pin
- Disconnector with spring
- All necessary detent springs and small parts
- Installation hardware and roll pins
AR15 Lower Parts Kit 5.56 Key Features
- Complete Assembly Solution: Contains every component required to fully assemble your AR-15 lower receiver, eliminating the need to source individual parts from multiple suppliers.
- CMMG Quality Assurance: Manufactured by CMMG, renowned for their precision engineering and commitment to producing reliable firearms components that meet military specifications.
- Universal Compatibility: Designed to work seamlessly with all mil-spec AR-15 lower receivers, ensuring proper fit and function across various manufacturers and build configurations.
- Precision Manufacturing: Each component is machined to exact tolerances using high-grade materials, ensuring smooth operation and long-lasting performance under demanding conditions.
- Easy Installation: All parts are properly sized and finished for straightforward assembly, making this kit suitable for both experienced builders and those new to AR-15 construction.
- 5.56/.223 Optimized: Specifically engineered for 5.56 NATO and .223 Remington calibers, providing optimal performance and reliability for these popular cartridges.
Why Choose CMMG for Your AR-15 Build
CMMG has established itself as a leader in the firearms industry through decades of innovation and quality manufacturing. Their lower parts kits undergo rigorous testing to ensure each component meets or exceeds industry standards. The company’s commitment to precision extends to every small part, from springs and detents to major components like the trigger assembly. This attention to detail translates to smoother operation, enhanced reliability, and improved overall performance of your completed rifle.
The kit’s components are manufactured using premium materials and advanced machining processes. The trigger components feature proper heat treatment for consistent break characteristics, while springs are manufactured to precise specifications for optimal tension and longevity. The safety selector provides crisp, positive engagement, and all pins and hardware are sized for proper fit without binding or excessive play.
Installation and Compatibility
This lower parts kit is designed for straightforward installation in any mil-spec AR-15 lower receiver. The components follow standard AR-15 specifications, ensuring compatibility with receivers from major manufacturers. Basic gunsmithing tools and knowledge are recommended for assembly, though the kit includes all necessary hardware for a complete installation. Proper installation will result in a lower receiver that functions reliably and safely for years of service.
The kit works with both forged and billet lower receivers that adhere to mil-spec dimensions. Whether you’re building a tactical rifle, hunting platform, or competition gun, this parts kit provides the foundation for a dependable firearm. The components are compatible with standard AR-15 upper receivers and will accommodate various barrel lengths and configurations commonly used in 5.56/.223 builds.
Invest in quality components for your AR-15 build with the CMMG AR15 Lower Parts Kit 5.56. This comprehensive kit eliminates guesswork and ensures you have everything needed for a successful build. With CMMG’s reputation for excellence backing every component, you can build with confidence knowing your finished rifle will perform when it matters most. Order your kit today and take the next step in creating your ideal AR-15 platform.