Personally i tend to buy used. From what ive seen used guns fall into 2 groups, mechanically sound and less than perfect finish or the "the damn thing wont feed, function or shoot accurately" gun. The latter group tends to have better finishes, because they were not shoot much. Most of the time a gun in the latter group has no function problem other than the previous owners inability to clean the gun or shoot it properly. If they do have real feed or function problems it is generally an inexpensive fix. But be carefull if you are not familiar with the style of weapon and its mechanics dont assume you can fix it easily. Just remember new guns can have problems too and you need to break them in properly.