JE Machine Tech DPMS Platform MIL-SPEC Skeletonized Buffer Tube Arrow Pattern Black. The arrow design reduces the overall weight of your rifle. The detent lock prevents the tube from rotating when firing. Specifications for JE Machine Tech DPMS Platform MIL-SPEC Arrow Pattern Skeletonized Buffer Tube: Manufacturer: JE Machine Tech Color: Black Finish: Type III Hardcoat Anodized Fabric/Material: 6061-T6 Aluminum Gun Type: Rifle Length: 7.25 in Diameter: 1.24 in Condition: New Weight: 0.25 lb Features of JE Machine Tech DPMS Platform MIL-SPEC Arrow Pattern Skeletonized Buffer Tube Unique arrow design pattern for weight reduction Type III hard-coat anodized 6061-T6 aluminum 6 positions Mil-Spec diameter buffer tube Detent-lock prevents tube rotation Accepts all Mil-Spec dimension stocks Package Contents: JE Machine Tech DPMS Platform MIL-SPEC Arrow Pattern Skeletonized Buffer Tube JE Machine Tech PS-BTM3: DPMS Platform MIL-SPEC Skeletonized Buffer Tube Arrow Pattern Black