Based on my personal experience, as long as you pick the right brand of airsoft SCAR, it will perform well and will give your money's worth. Some of these are those from Classic Army and Tokyo Marui which are well built, whether the L or H versions, and they will perform well out of the box without any need for upgrades. The Heresy Group talks about SCARs in this video... "A Scar fan ? Love them.... hate them ... Do you see the UGG Boot?"