The CMMG 55CA6C7-RETAIL Receiver Extension Kit is designed for AR-15 and M4-style carbine rifles requiring a complete buffer tube assembly. Built for dependable installation and everyday performance, this kit provides a collapsible stock interface with six adjustment positions for practical length-of-pull customization. Its black finish offers a clean, subdued appearance that integrates well with a wide range of AR-15 configurations.
This complete assembly combines aluminum, steel, and polymer components for a balance of strength, durability, and functional performance. The receiver extension tube is included, making the kit a convenient choice for builders, gunsmiths, and firearm owners completing or replacing an AR-15 carbine receiver extension system. The carbine-series design is compatible with standard AR-15 carbine applications and supports collapsible stock setups.
The CMMG AR-15 Receiver Extension Kit is configured without rails and is intended for use with compatible AR-15 rifle components. Its six-position adjustment system allows users to select a comfortable and practical stock position while maintaining a secure, streamlined setup. Confirm compatibility with the specific firearm, stock, buffer, spring, and installation requirements before use. Professional installation is recommended when appropriate, and all applicable firearm safety practices and laws should be followed.
Features:
- Brand: CMMG
- Part Number: 55CA6C7-RETAIL
- Product Type: Complete receiver extension and buffer tube assembly
- Firearm Fit: AR-15 and M4-style carbine rifles
- Adjustment Type: Collapsible stock interface
- Positions: Six stock adjustment positions
- Material: Aluminum, steel, and polymer construction
- Finish: Black
- Tube Included: Yes
- Rails: None
- Series: Carbine
