Hey, I bought a NEF handi-rifle for my youngest son. I saw it and thought it looked cool and was agreat idea for him to hunt with. I fired it this weekend and as soon as it fired, it breached open. I extracted the casing and fired it again, it breached open again just as soon as it fired. I was very disappointed. Ser number indicates it is a year 2002 model. anyone had this issue?? thanks