Many of the WA rifle failures have been due to user error, but if you scratch build a rifle say from an AGM m4 base; you'll soon realize the finickiness of the WA design. Buy a premade rifle and mostly you will avoid most if not all of the problems of a scratch build but there are always lemon rifles.
I have a 2011 Viper m4 (similar to a WOC except for the steel BC and aluminium nozzle), I've had it for over year and put through around 4000-6000 rounds(during skirmishes; MANY more if you count dry firing and plinking) through it and no problems. The only hiccups I dealt with were the e