While I agree with pretty much all of the other calls; I disagree with the "only for airsoft" call.
Airsoft is among one of the hardest uses I can think of for equipment. I am running, diving, sweating, throwing it into rocks, against buildings, getting it wet, getting it dirty, crawling over rocks, running through thorns, stepping on nails - much harder than pretty much everything except MAYBE like, real combat in a pretty harsh environment, much harder than say, police work (again, except maybe SWAT -- I don't think they're terribly tough on their gear though...not saying they're not tough, all respect to LE/MIL, but I don't think they do much outdoors stuff), hiking, walking, or any of that.