I just received my KWA M4A1 today. I shot two magazines through it with no problem and I was really impressed by the power and rate of fire of the gun. However, on my third mag the semi auto stopped working consistently. Now, every time I try to shoot semi, the gun makes a noise like the motor is trying to turn but is being stopped by something. Full auto works just fine, though. Also, semi works when I hold the gun upside down and shoot, and it also works for 1-2 shots if I shoot a burst on full auto just prior to switching the firing mode to semi. I am more than a little concerned about this, as I just spent $250+ on this gun and I have yet to actually use it in a battle. Any help/suggestions about how this problem can be corrected would be greatly appreciated.
EDIT: I just had another look at my gun and the semi will shoot, but i have to wait 3-4 seconds between trigger pulls. Also, it seems to sometimes shoot a burst when the switch is set to semi. I am not sure if the selector mechanism inside the gearbox is somehow messed up or what, but I am sure that this behavior is abnormal.
Edited by Quailman, 09 January 2009 - 02:52 PM.