I'm going to turn an old Wingmaster into a HD shotgun. I planned to buy the 18.5" Express barrel since the only short wingmaster barrel is the 20" with rifle sights. I also plan to keep it set up with the short mag tube. My understanding is the wingmasters use a different type of barrel support ring and mag cap and spring retainer. Will the Express barrel work with these? I read an old post about mag caps coming loose when using an Express barrel with old style spring retainer and mag cap.