I entrusted buying my first gun used but that was before the major influx of new players and the person selling to me was a fairly reputable gundoc IIRC.
3 or 4 years ago you generally wouldn't have a problem with a used gun and people would usually be willing to do a bit of post sale support (ie. refund for 50% of repairs on gun they sold) but nowadays I would be wary of buying used and only do so from trusted gundocs and what I deem to be reputable players.
ಠ_ಠLess QQ more Pew Pew
READY TO >> RACE