CMMG offers replacement components for the AR-15 that are made to strict military specifications. These high quality components will provide excellent fit and reliable function in your AR series rifle and are perfect for upgrading existing components or replacing worn or broken parts.
CMMG Mk4 Receiver Extension Buffer Tube Lock Ring AR-15, LR-308 Carbine
- Product Family #: 1022844516
- Product #: 687407
- Manufacturer #: 55CA9CB
- UPC #: 815835017426
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