I have a we hi-capa GBB, fully modified similar IPSC specs gun with 6.5" barrel, scope mount, scope, 22+1 magazine, short spring, trigger, etc
not even this price la ...
google ebairsoft , i got all my parts there, less than the marui one off course.
i got 3 scope for my gun, and 2 spring units, so is hard to tell you exactly how much