I generally only buy boneyard but I pick and choose. My dad made the mistake of buying someone's project. It was so bad he had to take the motor apart from where they'd somehow soldered it solid and basically ended up by a whole new gun in order to unfuck it. I learned from his mistake and picked up a VFC SCAR H for a fraction of the full price because it had a locked up gearbox. New motor and it ran fine, not that it mattered since I'm gutting it to build a DMR.