The gun did not come with a cleaning rod so I have tried gently pushing down the barrel with a coat hanger. No luck. If you look into the small opening where the BB's enter the hop-up, you can see a jammed BB. But there is also a small piece of metal that seems to protrude out from inside the entrance to the hop-up. It seems the BB won't release because it is stuck on this metal piece. When I push down the barrel with the coat hanger (to the point where you meet resistance), you can see that metal piece move in and out as though it is moving on a spring?? Help!