Hey guys I recently bought a Elite Force M4 CQB and so I set up a little target in my backyard to shoot it and see how it handles. It fired wonderfully until I set it down to see where I hit the target. After I checked I started to shoot again but nothing came out so I looked at the mag to see if I needed to reload and there was only about 10 in the mag so I reloaded it and it still didn't fire any BB's ( I used the high grade BBs they tell you to use) do I need to get a tech to look at it or is the mag just not feeding well?