14 inch Automag Spiral Rifled (JDM?) barrel, used shape. Wear on tip and at Breech. See photos. Rifled inside. No orings or detent at breech. Twistlock barrels require a wire or a plastic detent. Please see photos to see them. Some barrels have them included and some do not. Most included orings will need to be replace. If a wire / plastic twistlock detent is included it's likely okay but may need to be replaced at some point in the future. Spiral rifled bore looks good.