The CCM Barrel Sizers are made them to fit the most popular autococker style markers. This sizer will fit sutococker threaded bodies only and will only fit CCM Carbon Fiber barrels and CCM aluminum barrels. CCM products carry a LifeTime Workmanship Warranty. This warranty applies only to the original purchaser and is NON-TRANSFERABLE. This warranty does not apply to items that have been abused, misused, modified or repaired.