lot of the guns these days I've seen are marked down like a few dollars off the new price... claimed never gamed but they've plinked some ridiculous number of rounds through it... like plinking rounds don't use the gearbox at all or something...
Why risk getting a bum gun when for the few dollars more they've taken off you get something brand new?
with the exception of 1 gun I've bought off the classifieds, every one of them I've gotten required some amount of work or completely new major components.
I futz with V2s, V3s and V6s. I could be wrong... but probably, most likely not, as far as I know.