any1 have any problems out of these? i understand you get what u pay for but right out of the box first shot right on the money, 3 or 4th shot the thing shuts off, and everyshot after that. i also noticed the red dot in the sight was cocked too. so i got mad emptied the mag in about 2 sec and took it off for the day. got home started messing around turned it back on everything is centered and i would smack the sight with my hand pretty hard it stays on. havent shot since but was just wondering if anybody has heard or came across these problems.