The CMMG AR-15 MK4 Carbine Length Receiver Extension is the perfect must have accessory for your next AR-15 build. The CMMG tube is constructed from high quality aluminum and features a hard coat anodized matte black finish.
Features:
- For AR-15 Rifle builds
- Constructed from aluminum
Specifications:
- Color: Black
- Manufacturer Part #: 55CA9D7
- Subcategory: Stocks & Buffer Tubes