CMMG AR-15 A1 Receiver Extension and Stock Kit
The CMMG AR-15 A1 Receiver Extension and Stock Kit provides the components needed to equip a compatible AR-15 lower receiver with a traditional rifle-length fixed stock system. Modeled after the classic A1 configuration, this kit combines a fixed polymer stock with the matching rifle receiver extension, buffer, and action spring.
The A1-style stock features durable polymer construction with a rear storage compartment for carrying small accessories or maintenance items. An integral sling mount adds a convenient attachment point while maintaining the traditional fixed-stock profile.
Unlike carbine buffer systems that use an adjustable receiver extension, this kit is designed around a rifle-length recoil system. The included CMMG A1 receiver extension, rifle buffer, and rifle action spring provide the matched components needed for a complete fixed-stock installation.
Features
- Classic A1-style fixed stock configuration
- Rifle-length AR-15 buffer system
- High-strength polymer stock construction
- Rear storage compartment
- Integral sling attachment point
- Complete matched receiver extension, buffer, and spring package
- Designed for compatible AR-15 lower receivers
Kit Includes
- CMMG A1 fixed stock
- Rifle-length receiver extension
- Rifle buffer
- Rifle action spring
Specifications
- Platform: AR-15
- Stock Style: A1 Fixed
- Stock Material: Polymer
- Buffer System: Rifle-Length
- Receiver Extension: Rifle-Length
- Buffer: Rifle
- Action Spring: Rifle-Length
- Storage Compartment: Yes
- Sling Mount: Integral



