Je Machine Tech Pistol Buffer Tube Combo Features The Je Machine Tech Pistol Buffer Tube Combo bundles every part needed to finish a pistol length buffer system into one purchase including the tube itself a buffer spring a 3 oz buffer a castle nut and a standard end plate. Machined from 6061 aluminum and finished in a durable black anodized coating the tube resists wear from repeated brace or stock cycling. At 2.50 inches long and 1.24 inches in diameter it is sized to fit standard AR-15 and AR-308 lower receivers without modification. Having every component included in a single combo saves builders from tracking down individual parts from multiple sources. Because it is compatible with both AR-15 and AR-308 pattern lowers this combo covers a wide range of common pistol builds using a single part number. The 3 oz buffer paired with the included spring is matched to typical pistol length buffer tube applications for reliable cycling. At just 3 oz total weight for the tube itself the combo keeps the rear of a pistol build lightweight and maneuverable. For builders finishing out an AR-15 or AR-308 pistol the Je Machine Tech Pistol Buffer Tube Combo is for sale at GrabAGun. JE Machine Tech Pistol Buffer Tube Combo Specifications Manufacturer: JE Machine Tech Compatible Hosts: AR-15 / AR-308 Lower Receivers Color: Black Material: Aluminum Finish: Anodized Length: 2.50 Diameter: 1.24 Weight: 3 oz Available At: GrabAGun