Originally Posted by caboose36
I preformed a scratch test on the shootSOFT's G&G M4 upper reciever, it is infact some sort of metal.
the nylon fibre will scratch just like some sort of metal, but is in fact still a composite material. unless they have the ones with metal uppers, as far as i know, they're still nylon fibre. that's how good G&G's materials are.