Daniel Defense Receiver Extension 6 Position Rifle Buffer Tube Fits Mil-Spec Buttstocks. 7075-T6 Aluminum. Type-3 Hard Coat Anodized. Fits Mil-Spec Buttstocks. Specifications for Daniel Defense Receiver Extension 6 Position Rifle Buffer Tube: Manufacturer: Daniel Defense Color: Black Finish: Type III Hardcoat Anodized Fabric/Material: 7075-T6 Aluminum Condition: New Package Contents: Daniel Defense Receiver Extension 6 Position Rifle Buffer Tube Daniel Defense Warranty: Guaranteed Satisfaction All Daniel Defense products carry a 100percent satisfaction guarantee against defects in original materials and workmanship. If your Daniel Defense product shows evidence of such defects Daniel Defense will make every accommodation to fix repair or replace your product in the most expeditious manner possible. Daniel Defense does not warranty products or damage caused to our products by the correct or incorrect installation of other manufacturer's products. Warranty information and warranties are supplied solely by the manufacturer and not this retailer. This retailer publishes information from the manufacturer for information purposes only and the manufacturer is solely responsible and liable for any warranty information and warranties published by this retailer. Please reference the appropriate manufacturer documents or reach out to the manufacturer directly for full warranty terms and effective dates. Daniel Defense 05-013-16186: Receiver Extension 6 Position Rifle Buffer Tube Fits Mil-Spec Buttstocks