Well its a DPMS m4, it might work great for a year or break in the first 100rds. Its really in your best interest to get age verified and buy from the classifieds, just even to get JG m4 would be better than the one you were looking at. And you can buy them for around $350-$400.
Live for nothing, or die for something
They can have my rifle when they can pry it from my dead cold fingers