I highly recommend the Plano Rifle Case.
http://www.rangerjoes.com/plano-riflesh ... -5157.htmlI have used mine for awhile now and it still looks almost brand new. Very sturdy and fits my Tanaka M40A1, spare mags, USPc, and mags for it also. Plus, it's TSA certified so if you ever plan on flying to a large airsoft event, or just need to get them from one place-to-another, you can feel safe they will be kept in the same condition you pet them in there as.