Hello fellow members, can you guys please enlighten me on how heavy were the WWII British Mk Helmets (with nettings and liners) ? I just need an estimate on the British MkII, MkIII and MkIV helmets. The reason is that a friend of mine has some he tries to sell me, but the weight of each ranges from 2.5 pounds to 7 pounds, thus I'm not sure if some of them are really dated to the 40's, or are reproductions with cheaper material. Please help guys, thanks !!