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G&g combat machine problems

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3.3K views 9 replies 3 participants last post by  Zero Roaster  
#1 ·
Hey all, I have owned a combat machine for two months now and it just started having problems I added an r hop about a week ago and it works good but now when I shoot sometimes they will roll out the barrel, go perfectly, or come out and sink right away. I know it's not a hop up problem because there is no grease in the barrel or bucking and I cleaned out the nozzle. The nozzle is fine and still works but it's not shooting good at all. Any one know what's up with my gun?i forgot to mention that sometimes the gun won't shoot at all and then next time I press the trigger 3 bullets come out.
 
#2 ·
Have you tried backing off the hop completely and trying it? Sometimes you can over hop to the point it's causing jams. It sounds like you have a restriction in the hop up chamber. You may also want to try a different BB...
 
#6 ·
You may have to take apart the hop chamber and get a good look down the barrel and at how the bucking is sitting in it. If the nozzle is operating correctly, then you can eliminate the back end of the gun and focus on the barrel/hop up end of things. Something may be obstructing the barrel window or the feed tube.
 
#8 ·
Ok, another thing to check is how low the mag sits in the receiver. We just ran into this last week with an M16. Try firing while pushing the mag up into the mag well and see what happens.