Vision Products Buffer Tube Stock Adapter for Vision Legacy & Pro Chassis Black. They designed this Adapter to give you even more configuration options for their chassis this opens the door to lightweight builds and has the potential to lower the overall cost for you to get started with their chassis systems. This component is machined out of billet 7075-T6 Aluminum and anodized for a durable and smooth black surface finish. Specifications for Vision Products Buffer Tube Stock Adapter for Vision Legacy & Pro Chassis: Manufacturer: Vision Products Color: Black Fabric/Material: 7075-T6 Aircraft Aluminum Buffer Tube Size: Mil-Spec Finish: Anodized Features of Vision Products Buffer Tube Adapter for Vision Legacy & Pro Chassis Chassis compatibility: Vision Legacy Mid-Sections & Pro Chassis Buffer Tube compatibility: Mil-Spec Buffer Tubes Buttstock compatibility: Buttstocks with Mil-Spec Buffer Tube Spec Package Contents: Vision Products Buffer Tube Adapter for Vision Legacy & Pro Chassis Vision Products VISION-407: Buffer Tube Stock Adapter for Vision Legacy & Pro Chassis Black