STANAG hi-caps not feeding

[MrMoo]

Hey guys,

I just got an ICS L85A2, and I'm having trouble getting it to actually spit anything out. The gun appears to be firing just fine, and when I hold the gun upside down and put BBs directly in to the feeding tube, it fires them as expected. When I actually load a magazine and try firing, however, it's not producing anything. I've tried four different STANAG hi-caps in it, including the one that came with the gun, with no results. Am I doing something wrong? Could all four of my magazines be broken? I would think that I'm using the wrong type, but, even the one that came with the gun is acting up.

Suggestions appreciated!

Edit - Derp, stupid me. I just don't know how hi-caps work. All good here.