You need to ask yourself on what platform you are gonna use the scope: an AEG or a Sniper Rifle. What kind of field do you play most on? If you play on an indoor field with an AEG, a scope doesn't make much sense. If you mostly play outdoors, then Scope makes sense even on an AEG. But everything has its limits. In most airsoft cases, more than 4x magnification doesn't make much sense other than spotting or tracking your BBs.