VISM Commercial Spec AR15 Buffer Tube Black. Designed to fit Commercial Spec collapsible buttstocks. Made of precision machined aircraft grade aluminum for durability. Specifications for VISM Commercial Spec AR15 Buffer Tube: Manufacturer: VISM Color: Black Fabric/Material: Aluminum Gun Make: AR Platform Gun Model: AR-15 Package Contents: VISM Commercial Spec AR15 Buffer Tube AR Buffer Buffer Spring What firearm models does the manufacturer say VISM Commercial Spec AR15 Buffer Tube is compatible with? The manufacturer says that VISM Commercial Spec AR15 Buffer Tube is compatible with AR-15VISM VG134: Commercial Spec AR15 Buffer Tube Black