CMMG A1 Rifle Length Receiver Extension & Stock Kit
Complete rifle-length stock assembly kit for AR-15 platforms. Includes CMMG A1 receiver extension, rifle buffer assembly, action spring, and A1 buttstock. Combine with lower parts kit to finish your build.
CMMG A1 Rifle Length Receiver Extension & Stock Kit
This complete stock assembly kit provides everything needed to finish the rear of your AR-15 rifle build. Designed for shooters who prefer the classic A1-style ergonomics and proven reliability of rifle-length systems.
What's Included
- CMMG A1 Receiver Extension – Rifle-length tube engineered for proper buffer system function
- Rifle Buffer Assembly – Matched to rifle-length specifications for reliable cycling
- Rifle Action Spring – Premium spring rated for consistent performance
- A1 Rifle Length Buttstock Assembly – Classic fixed stock with integral storage compartment
- End Cap & Hardware – All fasteners and components needed for assembly
Design & Function
The A1-style receiver extension has proven itself across decades of service rifles. This kit maintains that legacy while offering modern manufacturing standards. The rifle-length buffer system is optimized for 5.56 NATO and .223 Remington platforms, delivering smooth, reliable operation.
Assembly
Simply combine this kit with your choice of lower parts kit to complete your lower receiver group. Installation is straightforward for anyone with basic gunsmithing knowledge.
Specifications
- Finish: Black
- Stock Type: Fixed A1 buttstock
- Compatibility: AR-15 platforms
- Manufacturer: CMMG
