q lock feed neck
a new on/off asa if you want, but stock works perfect
I've had this gun for almost three months now, and ive had no problems at all. the first time i used this gun shot about a case and a half through it and never had problems. the only thing that i've noticed was that the on/off asa was a little loose after the whole day of diving and sliding, so maybe it was just a factory thing that they dont tighten them up when boxing their markers but after tightening the asa everything was fine. never had leaks as long as you lube the bolt pretty well it wont let you down.
Over all i would definitely recommend this gun because its definately a tournament ready gun for under 500 bucks so what more could you ask for.