WE M4 firing issues
Hi everyone. I'm having an issues with my WE M4 GBBR not firing. The gun cycles correctly bolt goes all the way back, hammer cocks, BB is inserted into the chamber but no BBs come out the barrel. they just seem to stack inside the chamber. I've tried adjusting the hop up with no effect. I have 2 mags and there is no difference with either of them. The gun does fire however if I insert a mag with no BBs just gas. Any help on this will be much appreciated.
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