OK then...The buttplates were mazakor Zamak I think. Not really steel. Longbranch had a habit of marking everything I think. You can find tiny marks on the smallest parts, except pins. The barrels were 5 L&G unless you get some of the pre Korea ones that are 6. I can't remember if we made 2 groove or they came from Savage. The mag doesn't have to have a serial number but may have. I think it was more for a control thing. If it's numbered and matches, that may be a miracle...