This is not Molle or Alice, its all attached. There is other versions that are Molle but they run like $500-600. Oh ya you can also try Arktisusa.com They are in Ohio i belive. Some of the larger runs go on sale alot, they cant sell them all before the new models come out, and i have seem them dirt cheap on sale around $60 to 80.
I cant imagine anyone wanting to carry 50lbs of duffle lol. I would serioulsy check out the new snugpack rocket packs, they hold about 90-100 lbs of kit they are a british pack sold in the USA now. Look for snugpack bergen. I swear by british kit.