So....on the AIM TOP first.... Shot it and fielded one two weeks ago. (In Taiwan right now) They are not built for realism, but more for performance. (bolt doesn't travel all the way back) Averaged out 175m/s from the first to the last round. Grouping is pretty decent. Upgrades wise, haven't bothered it since I'm probably not going to get one. One thing tho, there's this one part made out of plastic that breaks easily. Forgot what it was but some people already figured out how to solve it. Now the WE SVD Avg 140m/s Gun must be charged to switch the safety on. Eh, pics.