My "team" or airsoft group has a tech. I have no problems with upgrades or repairs. I wouldn't risk buying from someone unknown anyway. Just wondering if I'm missing anything worth all the trouble of tracking someone down. I'm not a fan of the type of game the other groups/teams play so I won't likely join in one of their events.(My "team" is just a group of guys who like going out and shooting each other but none of us has the time to commit to training and playing consistantly together as a competitive team).