Depending on who interprets the lettering a 30AW might mean a 30a with walnut stocks, a 30as might mean a 30a with beech stocks,I m not real sure what the lettering system means, I’ve heard many contradicting claims through the years,I actually don’t believe 30 AW means a Walmart sold Marlin,although you probably could buy a 30AW from Walmart.My 30AS came with a cap ,not a barrel band,it also came from with extensive water and extinguisher damage and was $25 o t d ,it is now a 30 AW ( brand new unused New Haven barrel),and though the beech stocks were salvaged and refinished beautifully by me,It now has proper walnut stocks also beautifully oil finished by me with a bullseye and a cap not a band.it’s also being rust blued by me,Collectors in the far future may assume it to be a New Haven custom shop creation. Unless I develop a penchant for checkering it will stay smooth walnut.the most recent value quote for a 30AW was $890,but you could probably find one used ,if your lucky,and shop small backwoods stores,for about $400-500. …or even$25.00.if you don’t mind some work..and a little more money!